Use words from the given list to complete the following paragraph. (The words may be used once/ more than once / not at all).

(Skull, Vertebral column, Piamater, Arachnoid membrane, Brain, Spinal cord, Meninges, Duramater)

The central nervous system is covered by three protective coverings collectively called _______. The outermost cover lying below the ______ and ______ is double thick and is called ________. The middle covering is thin and vascularised and is called _______. The innermost cover is a very thin delicate membrane and is closely stretched over the outer surface of _____and ____ and is called __________.

Name the endocrine glands and their location in the human body. Describe any two of them in detail.

Why is meiosis called reduction division? Describe the various stages with relevant diagrams. Add a note on the significance of meiosis.

Match these parts with their functions:-

medulla oblongata, cerebellum, forebrain, thalamus, cerebral cortex, hind brain, pons, hypothalamus

a) Sleep centre and respiratory centre

b) Several reflexes involved in the regulation of heart beat, blood vessel contraction, breathing etc

c) Consists of the cerebrum, thalamus, and hypothalamus

d) Motor and sensory areas

e) A major conducting center for sensory and motor signaling

f) Regulation of sexual behaviour

g) Consists of pons, cerebellum and medulla oblongata

h) Co-ordinates the group movements of voluntary muscles, as in walking or running

Observe the diagram of the human brain and identify the areas mentioned:

i) The area responsible for consciousness, intelligence, memory, imagination and reasoning.

ii) The area responsible for regulation and co-ordination of group movements of voluntary muscles.

iii) The area responsible for sleeping and respiration.

iv) The area responsible for reflexes involved in the regulation of heart beat, blood vessel contraction, breathing etc