Class 10 Exam > Class 10 Notes > Science Class 10 > Chemical Coordination In Animals - Endocrine System
Chemical Coordination In Animals - Endocrine System | Science Class 10 PDF Download
| Table of contents |
|
| Hormones in Animals |
|
| Hormones |
|
| Difference between Nervous and Hormonal Coordination |
|
| Some Important Endocrine Glands and Hormones |
|
Hormones in Animals
- The branch of biology which deals with the study of the endocrine system and its physiology is known as"endocrinology".
- "Thomas Addison" is known as the Father of Endocrinology.
- The glands which pour their secretion directly into the blood are called endocrine glands. These glands lack ducts, so these glands are called ductless glands. Example: Thyroid gland, parathyroid gland.
- On the other hand, the glands with ducts are called exocrine glands. Example: Sweat gland, salivary gland.
Pancreas has both exocrine and endocrine part, so it is also called mixed gland or common gland or heterocrine gland.
Hormones
- Chemicals secreted by endocrine glands are called "hormones".
- The term hormone was coined by Starling.
- Hormones are also called "primary messengers" or "chemical messengers".
Discovery
- First discovered hormone was secretin.
- It was discovered by Bayliss and Starling.
Question for Chemical Coordination In Animals - Endocrine SystemTry yourself: Which gland is an example of an endocrine gland?View Solution
Physical & Chemical Properties of Hormones
- These are secreted by endocrine glands.
- Hormones are secreted only when required.
- Their secretion is regulated by feedback mechanisms.
- These are generally released in the bloodstream.
- The molecules of most of the hormones are small.
- Their molecular weight is low.
- The secretion of a hormone is always in very small quantity.
- Hormones are destroyed after use i.e. hormones can not be stored in the body. Thyroxine is an exception.
Male Endocrine Glands
Major Endocrine Glands
Difference between Nervous and Hormonal Coordination
| S. NO. | Nervous Coordination | Hormonal Coordination |
| 1 | It is sent as an electrical impulse along axons, and as a chemical across synapse. | It is sent as a chemical messenger via blood stream. |
| 2 | Information travels rapidly, in milliseconds. | Information travels slowly. |
| 3 | Information is directed to specific receptors–one or a few nerve fibres, gland cells or other neurons. | Information is spread throughout the body by blood from which the target cells or organs pick it up. |
| 4 | It gets response immediately. | It gets response usually slowly. |
| 5 | Its effects are short-lived. | Its effects are generally more prolonged. |
Some Important Endocrine Glands and Hormones
| S. No. | Nature of Endocrine gland | Position in body | Hormone(s) | Chemical Nature of Hormones | Function(s) | Hypo/Hypersection Causes | Special Points |
| 1 | Hypothalamus | Below thalamus in brain | Releasing and inhibiting hormones | Protein | Regulate the release of pituitary hormones | Ectodermal in orgin | |
| 2 | Pituitary - Anterior gland | Below hypothalamus attached to it with a stalk called infundibulum
| GH (Growth Hormone) | Protein | Body Growth | Hyposecretion in children causes dwarfism | Also called master gland of the body |
| Growth of Muscles and bones | Hypersecretion in children causes gigantism and in adults causes acromegaly | ||||||
| TSH (Thyroid Stimulating Hormone) | Protein | Regulate the secretion of hormones from thyroid | |||||
| ACTH (Adreno Cortico Tropic Hormone) | Protein | Secretion of hormones from adrenal cortex | |||||
| FSH (Follicle Stimulating Hormone) | Protein | stimulate spermatogenesis and oogenesis | |||||
| LH (Luteinising Hormone) | Protein | It causes ovulatiin and formation of corpus luteum | - LH in males is called ICSH | ||||
| LTH (Luteotropic Honnone) | Protein | Stimulate growth of mammary glands during pregnancy and promotes lactation alter parturition (delivery) | - Also Known as Prolactin. | ||||
Middle lobe | MSH (Melanocyte Stimulating Honnone) | Protein | Metachrosis (colour change) in poikilothermals (cold blooded animals) | - In human MSH is secreted by anterior lobe is merged in anterior lobe | |||
| Posterior lobe | Oxytoxin | Protein | -Function in human is not known. - Contraction of uterine muscles during pregnancy - Causes release of milk after delivery | Also called birth hormone | |||
Vasopressin | Protein | - Reabsorption of water from DCT of nephron and collecting duct | -Hyposecretion causes Diabetes insipidus | Also called ADH (Antidiuretic hormone) | |||
| 3 | Thyroid | Located in the neck between the trachea and larynx | Thyroxine | Amine | Regulate BMR of body | - Hyposecretion in children causes cretinism | Thyroxine is the only hormone stored in our body |
| - Calcitonin | Protein | -Decreases the level of calcium in blood | - Hyposecretion in adults causes myxoedema - Generally say hyposecretion of thyroxine causes simple goitre - Hypersecretion of Thyroxine causes exophthalmic goitre | Element in thyroxine is iodine | |||
| 4 | Parathyroid | Attached to thyroid | Parathormone (PTH) | Protein | Increases the level of calcium in blood | Hypersecretion of PTH causes osteoporosis Hyposecretion causes tetany | Also called Collip's Hormone |
| 5 | Pineal gland | Attached to epithalamus in brain | Melatonin | Amine | - Metachrosis in poikibthermals - Control sexual behaviour in mammals | - Also called epiphysis cerebri - Also called as third eye in frog - Ectodermal in origin | |
| 6 | Pancreas | In the loop of duodenum | - Insulin | - Protein | - Decreases the level of glucose in blood | - Hyposecretion of insulin causes Diabetes mellitus | World Diabetes Day 14 November
|
| - Glucagon | - Protein | - Increases the level of glucose in blood | - Endocrine part of pancreas is called Islets of Langerhans. - Endodennal in origin | ||||
| 7 | Adrenal Gland | Above Kidney | Corticoids | Steroid | Hyposecretion of corticoids causes Addison's disease | Ectomesodennal in origin | |
| Adrenal Cortex | Mineralo corticoids | Maintain the level of Na+, K+ and Cl- body | Hypersecretion of corticoids causes Cushing's and Conn's disease | Also called 3-F gland, Life saving gland, 4-S gland, Emergency gland | |||
| Gluco corticoids | Carbohydrate metabolism | ||||||
| Sex corticoids | Secrete androgens and estrogens | ||||||
| Adrenaline | Amine | Increases heart beat, blood pressure and blood glucose level | |||||
| 8 | Testes | Outside the abdominal cavity | Testosterone | Steroid | -Stimulate spermatogenesis -Promote secondary sexual | ||
| 9 | Ovaries | Inside the abdominal cavity | Estrogen | Steroid | Stimuate oogenesis | ||
| Progestrone | Steroid | - Promote secondary sexual characters in females | |||||
| - Maintain pregnancy | Progesterone is also called anti abortion hormone | ||||||
| 10 | Thymus | Near Heart | Thymosin | Protein | Increase immunity of body | - Endodermal in origin -Also called Throne of Immunity or training School of T-lymphocytes |
The document Chemical Coordination In Animals - Endocrine System | Science Class 10 is a part of the Class 10 Course Science Class 10.
All you need of Class 10 at this link: Class 10
|
85 videos|437 docs|75 tests
|
FAQs on Chemical Coordination In Animals - Endocrine System - Science Class 10
| 1. What are hormones? |  |
Ans. Hormones are chemical messengers that are produced by endocrine glands and are responsible for regulating various bodily functions. They are released into the bloodstream and travel to specific target cells or organs, where they elicit specific responses.
| 2. How are nervous and hormonal coordination different? | |
Ans. Nervous coordination involves the transmission of electrical signals through specialized cells called neurons. It is fast-acting and generally involves short-lived responses. On the other hand, hormonal coordination involves the release of hormones into the bloodstream, which then travel to target cells or organs to elicit a response. It is slower-acting but often results in long-lasting effects.
| 3. What are some important endocrine glands and hormones in animals? | |
Ans. Some important endocrine glands in animals include the pituitary gland, thyroid gland, adrenal glands, pancreas, and gonads. These glands produce hormones such as growth hormone, thyroid hormone, adrenaline, insulin, and sex hormones (estrogen and testosterone), respectively.
| 4. How does the endocrine system regulate the body? | |
Ans. The endocrine system regulates the body by maintaining homeostasis and coordinating various physiological processes. Hormones produced by the endocrine glands act as chemical messengers and help regulate metabolism, growth and development, reproduction, stress response, and many other functions in the body.
| 5. What are some examples of hormonal disorders in animals? | |
Ans. Some examples of hormonal disorders in animals include hypothyroidism (low thyroid hormone levels), hyperthyroidism (excessive thyroid hormone levels), diabetes (insufficient insulin production or insulin resistance), and adrenal insufficiency (low levels of adrenal hormones). These disorders can lead to various symptoms and health complications if left untreated.
About this Document
|
8.9K Views |
|
4.94/5 Rating |
|
Nov 23, 2024 Last updated |
Document Description: Chemical Coordination In Animals - Endocrine System for Class 10 2024 is part of Science Class 10 preparation.
The notes and questions for Chemical Coordination In Animals - Endocrine System have been prepared according to the Class 10 exam syllabus. Information about Chemical Coordination In Animals - Endocrine System covers topics
like Hormones in Animals, Hormones, Difference between Nervous and Hormonal Coordination, Some Important Endocrine Glands and Hormones and Chemical Coordination In Animals - Endocrine System Example, for Class 10 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for Chemical Coordination In Animals - Endocrine System.
Introduction of Chemical Coordination In Animals - Endocrine System in English is available as part of our Science Class 10
for Class 10 & Chemical Coordination In Animals - Endocrine System in Hindi for Science Class 10 course.
Download more important topics related with notes, lectures and mock test series for Class 10
Exam by signing up for free. Class 10: Chemical Coordination In Animals - Endocrine System | Science Class 10
Description
Full syllabus notes, lecture & questions for Chemical Coordination In Animals - Endocrine System | Science Class 10 - Class 10 | Plus excerises question with solution to help you revise complete syllabus for Science Class 10 | Best notes, free PDF download
Information about Chemical Coordination In Animals - Endocrine System
In this doc you can find the meaning of Chemical Coordination In Animals - Endocrine System defined & explained in the simplest way possible. Besides explaining types of
Chemical Coordination In Animals - Endocrine System theory, EduRev gives you an ample number of questions to practice Chemical Coordination In Animals - Endocrine System tests, examples and also practice Class 10
tests
|
Explore Courses for Class 10 exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
Related Searches
Free
,video lectures
,mock tests for examination
,MCQs
,Important questions
,Objective type Questions
,Extra Questions
,Chemical Coordination In Animals - Endocrine System | Science Class 10
,study material
,Viva Questions
,Summary
,Semester Notes
,Chemical Coordination In Animals - Endocrine System | Science Class 10
,practice quizzes
,Chemical Coordination In Animals - Endocrine System | Science Class 10
,Previous Year Questions with Solutions
,past year papers
,Exam
,Sample Paper
,ppt
,shortcuts and tricks
;
Additional Information about Chemical Coordination In Animals - Endocrine System for Class 10 Preparation
Chemical Coordination In Animals - Endocrine System Free PDF Download
The Chemical Coordination In Animals - Endocrine System is an invaluable resource that delves deep into the core of the Class 10 exam.
These study notes are curated by experts and cover all the essential topics and concepts, making your preparation more efficient and effective.
With the help of these notes, you can grasp complex subjects quickly, revise important points easily,
and reinforce your understanding of key concepts. The study notes are presented in a concise and easy-to-understand manner,
allowing you to optimize your learning process. Whether you're looking for best-recommended books, sample papers, study material,
or toppers' notes, this PDF has got you covered. Download the Chemical Coordination In Animals - Endocrine System now and kickstart your journey towards success in the Class 10 exam.
Importance of Chemical Coordination In Animals - Endocrine System
The importance of Chemical Coordination In Animals - Endocrine System cannot be overstated, especially for Class 10 aspirants.
This document holds the key to success in the Class 10 exam.
It offers a detailed understanding of the concept, providing invaluable insights into the topic.
By knowing the concepts well in advance, students can plan their preparation effectively.
Utilize this indispensable guide for a well-rounded preparation and achieve your desired results.
Chemical Coordination In Animals - Endocrine System Notes
Chemical Coordination In Animals - Endocrine System Notes offer in-depth insights into the specific topic to help you master it with ease.
This comprehensive document covers all aspects related to Chemical Coordination In Animals - Endocrine System.
It includes detailed information about the exam syllabus, recommended books, and study materials for a well-rounded preparation.
Practice papers and question papers enable you to assess your progress effectively.
Additionally, the paper analysis provides valuable tips for tackling the exam strategically.
Access to Toppers' notes gives you an edge in understanding complex concepts.
Whether you're a beginner or aiming for advanced proficiency, Chemical Coordination In Animals - Endocrine System Notes on EduRev are your ultimate resource for success.
Chemical Coordination In Animals - Endocrine System Class 10 Questions
The "Chemical Coordination In Animals - Endocrine System Class 10 Questions" guide is a valuable resource for all aspiring students preparing for the
Class 10 exam. It focuses on providing a wide range of practice questions to help students gauge
their understanding of the exam topics. These questions cover the entire syllabus, ensuring comprehensive preparation.
The guide includes previous years' question papers for students to familiarize themselves with the exam's format and difficulty level.
Additionally, it offers subject-specific question banks, allowing students to focus on weak areas and improve their performance.
Study Chemical Coordination In Animals - Endocrine System on the App
Students of Class 10 can study Chemical Coordination In Animals - Endocrine System alongwith tests & analysis from the EduRev app,
which will help them while preparing for their exam. Apart from the Chemical Coordination In Animals - Endocrine System,
students can also utilize the EduRev App for other study materials such as previous year question papers, syllabus, important questions, etc.
The EduRev App will make your learning easier as you can access it from anywhere you want.
The content of Chemical Coordination In Animals - Endocrine System is prepared as per the latest Class 10 syllabus.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup