Circulatory system transports these throughout the body

(a)

Oxygen

(b)

Nutrient

(c)

Hormones

(d)

All of these

Main organ of respiration in human body is

(a)

Stomach

(b)

Spleen

(c)

Heart

(d)

Lungs

Breakdown of food into smaller molecules in our body is known as

(a)

Muscle contraction

(b)

Respiration

(c)

Digestion

(d)

Excretion

A group of organs together make up an ____________________ system.

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organ

The part of the skeleton that protects the brain is __________________.

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Skull

The process by which the body removes waste is____________________.

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excretion

The endocrine glands produce chemical substances called ________________.

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hormones

Describe about skeletal system.

Write the functions of epiglottis.

What are the three types of blood vessels?

Define the term "Trachea".

Write any two functions of digestive system.

Name the important parts of the eye.

Name the five important sense organs.

Write a short note on rib cage.

List out the functions of the human skeleton.

Differentiate between the voluntary muscles and involuntary muscles.

List out the functions of Endocrine system and Nervous system.

Label the diagram given below to show the four main parts of the urinary system and answer the following questions.

A. Which organ removes extra salts and water from the blood?
B. Where is the urine stored?
C. What is the tube through which urine is excreted out of the body?
D. What are the tubes that transfer urine from the kidneys to the urinary bladder called?

Why do we sweat more in summer?

Why do we hiccup and cough sometimes when we swallow food?