Name the two systems of control and coordination in higher animals.
Nervous system and Endocrine system.
What are the two parts of the vertebrate nervous system ?
Central nervous system and Peripheral nervous system.
If we happen to touch a hot object unknowingly, we immediately pull back our hand. What is this type of action known as ?
Name the three components of a neuron (or nerve cell).
Cell body, dendrites and axon.
(a) What are the short fibres of a neuron known as ?
What is the long fibre of a neuron known as ?
Name the most important part of the human brain.
Which part of the brain maintains posture and balance of the body ?
State one function each of cerebellum and pons.
(a) Cerebellum ? It helps in maintaining posture and balance of the body.
(b) Pons ? It regulates the respiration process.
Name one hormone secreted by the pituitary gland.
Where are hormones made in the human body ?
What is the name of the system of glands which produces hormones ?
Which gland secretes the growth hormone ?
Name the hormones secreted by (a) testes, and (b) ovaries
(b) Progesterone and oestrogen.
What are the scientific names for the following receptors in animals ?
(a) receptors for light
(b) receptors for heat
(c) receptors for sound
(e) receptors for smell
(e) receptors for taste
(d) Olfactory receptors.
(e) Gustatory receptors.
Name the disease caused by the deficiency of insulin hormone in the body.
Name, the disease caused by the deficiency of thyroxine hormone in the body.
Which halogen element is necessary for the making of thyroxine hormone by the thyroid gland ?
Why are some patients of diabetes treated by giving injections of insulin ?
The people having severe diabetes are treated by giving injections of insulin.
What is the name of in-built ‘arrangement’ in our body which controls the timing and amount of hormones released by various endocrine glands in the body ?
Name one gland each :
(a) which acts only as an endocrine gland.
(b) which acts only as an exocrine gland.
(c) which acts both as an endocrine gland as well as an gxocrine gland.
(a) Thyroid gland.
(b) Salivary glands.
What part does the diet play in helping us to have a healthy thyroid gland ?
Diet provides iodine for making thyroxine hormone which keeps the thyroid gland healthy.
If sugar is detected in the urine of a person, name the disease he is suffering from.
Name two parts of the body which contain receptors of chemical stimuli.
Nose and Tongue.
Which part of the eye contains cells which are sensitive to light ?
What are the two main communications systems in an animal’s body ?
Nervous system and endocrine system.
Which one term in each of the following includes the other three ?
(a) thyroid, ductless gland, thymus, pituitary, ovary
(b) adrenalin, insulin, hormone, thyroxine, estrogen
(a) Ductless gland.
Which parts of the body form the central nervous system ?
Brain and spinal cord.
Give three examples of reflex actions.
(i) Knee jerk reflex.
Why do you need iodine in your diet ?
Because iodine is necessary for making thyroxine hormone.
State whether coughing is a voluntary action or reflex action.
Fill in the following blanks with suitable words :
(a) The two examples of effectors are…………. and………………
(b) Our…………. system allows Us to react to our surroundings. Information from receptors passes along…………. neurons to our brain. Our brain sends impulses along………… neurons to our muscles.
(c) A neuron which carries an impulse to the brain is called a……………….
(d) The neuron which carries a message for action to a muscle or gland is known as a……………….
(a) Muscle; glands.
(b) Nervous; sensory; motor.