Science Activity 7.3 of Class 10 Science CBSE

In this post, we will discuss science activity 7.3 of class 10 science CBSE from chapter 7 Control and Coordination of NCERT Book. You can also read science activity 7.2 of class 10 science CBSE.

Science Activity 7.3 of Class 10 Science CBSE

In this science activity 7.3 of class 10 science CBSE we are going to learn about Endocrine glands, secreted hormones, and their functions.

 

Activity7.3

Object – Identify Endocrine glands, secrete hormones, and their functions

Procedure – First look at the different glands given in the figure and identify the endocrine glands.

Endocrine glands- control and  coordination 

Observation - In the figure following endocrine glands are shown:

(i)          Hypothalamus

(ii)       Pituitary gland

(iii)     Pineal gland

(iv)     Thyroid gland                              

(v)          Parathyroid gland

(vi)         Pancreas

(vii)         Adrenal glands

(viii)      In males testes and in females ovaries.

Hormones and functions

  (i) Hypothalamus – Releasing hormone 

Function – Regulation of the secretion of hormones from the pituitary gland

(ii)      Pituitary gland – Growth Hormone

Function – Regulates tissue and bone growth, controls the amount of water, controls the other endocrine glands

(iii)     Pineal gland – Melatonin hormone

Function – Induces sleep at night and serves as a biological clock of the body.

(iv)    Thyroid gland – Thyroxine hormone

Function – Regulates the rate of growth and metabolism. Deficiency of this hormone causes overweight and sluggishness and too much of this hormone cause thinness and overactivity.

                       

(v)    Parathyroid gland -  Parathormone

Function – maintains a level of calcium in the blood. Increases calcium absorption and promotes the resorption of calcium from bones.

(vi)      Pancreas – Insulin hormone

Function – Regulates sugar metabolism, deficiency of this hormone leads to a high sugar level in the blood called diabetes.

(vii)     Adrenal glands – Adrenaline hormone

Function – Helps in facing difficult situations and called do and die hormone.

(viii)   Testes – Found in males and secrete testosterone hormone

Function – Responsible for masculine features such as the growth of mustaches and beards.

(ix)      Ovaries – Found in females and secrets Estrogen hormone

Function – Responsible for Feminine features like development of breasts, soft voice, menstruation 

So now you can understand  Science Activity 7.3 of Class 10 Science CBSE for  better practice you can also read NCERT solutions of class 10 Science Chapter 7 Control and Coordination.

Related Searches

1. Previous activity - Activity 7.2

2. Solutions of Chapter 7 Control and  coordination

3. Extra Questions of Chapter 7