SCERT Maharashtra solutions for Biology [English] 12 Standard HSC chapter 9 - Control and Co-ordination [Latest edition]

Diffused type of nervous system is seen in ______.

Planaria shows ______ type of nervous system.

In order for a stimulus to be effective, the stimulus must have a minimum intensity called ______ stimulus.

The resting potential of a neuron is ______.

The third ventricle of brain is connected to the fourth ventricle of brain through ______.

Degeneration of dopamine producing neurons in the CNS causes ______ disease.

______ is a mineralocorticoid secreted by Adrenal gland.

______ has an important role in the development of immune system by maturation of T lymphocytes.

Hyper secretion of growth hormone in childhood cause ______.

______ shows gastric contractions and inhibit the secretion of gastric juice.

Which cells of PNS secrete myelin sheath around the nerves?

Give function of astrocytes in nervous system.

What is the covering of nerve fascicule called?

How electrical synapse differs from chemical synapse?

What is the function of the red nucleus?

Define Saltatory conduction.

Name the hormone secreted by Pars intermedia in lower vertebrates.

Which disease is caused by hyper secretion of Glucocorticoids?

Which organ acts a temporary endocrine gland in females?

Give one role of hormone therapy.

‘Injury to the medulla oblongata causes sudden death’ Explain.

Which two hormones are responsible for the regulation of calcium and phosphorus in the blood?

Describe any two hormones produced by the ovaries.

Name the glucocorticoid used in treatment of allergy and why?

Which hormone is secreted by Pineal gland? What is its function?

Sketch and label T. S. of Spinal cord.

Sketch and label V.S of Pituitary gland.

Enlist the meninges of human brain.

Describe any three functions of hypothalamus.

Name three Mixed cranial nerves along with their numbers.

Distinguish between

Cerebrum and Cerebellum.

Answer the questions after observing the diagram given below.

1. What acts as the first messenger?
2. Why can’t hormones like catecholamines enter their target cells through plasma membrane?
3. Name the mode of hormone action shown in the diagram.

Complete the table based on disorders caused due to under secretion or over secretion of Thyroid gland.

Give the names of the hormones released by neurohypophysis.

A boy shows excessive thirst and micturition because of deficiency of a hormone secreted by neurohypophysis. Name the disease he is suffering from.

Describe the functional areas of Cerebrum.

Distinguish between

Sympathetic and parasympathetic nervous system.

Describe any four hormones secreted by Adenohypophysis.

Write a note on the four different kinds of cell in Pancreas.

Complete the flowchart of the process of conduction of nerve impulses.