What are the main components of blood?

The main components of blood are plasma, red blood cells, white blood cells, and platelets.

Fill in the blank: The circulatory system is primarily responsible for transporting ___, ___, and ___ throughout the body.

Oxygen, nutrients, and waste

What is the primary function of red blood cells (RBCs)?

The primary function of red blood cells (RBCs) is to carry oxygen to the body and bring carbon dioxide back to the lungs for exhalation.

True or False: Platelets are responsible for fighting infections in the body.

False. Platelets are tiny fragments that help in blood clotting, preventing excessive bleeding when there is an injury.

The pulse rate is an indicator of ____________.

How fast the heart is beating

True or False: Veins carry oxygen-rich blood away from the heart.

False. Veins carry blood that is low in oxygen and full of waste products back to the heart.

The heart is responsible for ensuring the continuous circulation of ___ and ___ throughout the body.

Oxygen and nutrients

True or False: The heart has three chambers that mix oxygen-rich and carbon dioxide-rich blood.

False; the heart has four chambers that prevent the mixing of oxygen-rich and carbon dioxide-rich blood.

Excretion in animals is essential because it helps to remove ___ produced in the cells.

Waste products such as urea, uric acid, and excess water.

True or False: Aquatic animals primarily excrete urea as their major excretory product.

False. Aquatic animals like fishes excrete ammonia.

The kidneys filter blood through tiny blood vessels known as ___.

Capillaries

True or False: The urinary bladder stores urine permanently until it is expelled from the body.

False. The urinary bladder stores urine temporarily.

An adult passes about ___ to ___ liters of urine every 24 hours.

1 to 1.8

True or False: Kidney failure occurs when there is an infection, causing waste products to remain in the blood.

True

What is the primary component of sweat?

Water and salts