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

The nervous system of mammals uses both electrical and chemical means to send signals via neurons. Which part of the neuron receives impulse?

___________ is a neurotransmitter.

The supporting cells that produce myelin sheath in the PNS are _________.

A collection of neuron cell bodies located outside the CNS is called _________.

Receptors for protein hormones are located ________.

If the parathyroid gland of man is removed, the specific result will be ___________.

Hormone thyroxine, adrenaline, and nonadrenaline are formed from _____________.

Pheromones are chemical messengers produced by animals and released outside the body. The odour of these substance affects _____________.

Multiple choice question.

Which one of the following is a set of discrete endocrine glands?

Multiple choice question.

After ovulation, the Graafian follicle changes into ___________.

Multiple choice question.

Which one of the following pairs correctly matches a hormone with a disease resulting from its deficiency?

Multiple choice question.

___________ is in direct contact of brain in human.

What is the function of the red nucleus?

Very very short answer question.

What is the importance of Corpora quadrigemina?

What does the cerebellum of the brain control?

Name the three ossicles of the middle ear.

Very very short answer question.

Name the hormone which is an anti-abortion hormone.

Name an organ that acts as a temporary endocrine gland.

Very very short answer question.

Name the type of hormones binding to DNA and alter gene expression.

Very very short answer question.

What is the cause of abnormal elongation of long bones of arms and legs and of the lower jaw?

Very very short answer question.

Name the hormone secreted by the pineal gland.

Which endocrine gland plays an important, role in improving immunity?

Match the organism with the type of nervous system found in them.

Describe the endocrine role of islets of Langerhans.

Very short answer question.

Mention the function of testosterone?

Very short answer question.

Give symptoms of the disease caused by hyposecretion of ADH.

Short answer question

Rakesh got hurt on his head when he fell down from his motorbike. Which inner membranes must have protected his brain? What other roles do they have to play?

Short answer question

Give a reason - Injury to medulla oblongata may prove fatal.

Short answer question

Distinguish between the sympathetic and parasympathetic nervous system on the basis of the effect they have on: a. Heartbeat b. Urinary Bladder

Short answer question

While holding a teacup Mr. Kothari’s hand's rattle. Which disorder he may be suffering from and what is the reason for this?

Short answer question

List the properties of the nerve fibres.

How does the tongue detect the sensation of taste?

Short answer question

State the site of production and function of Secretin, Gastrin, and Cholecystokinin.

Short answer question

An adult patient suffers from low heart rate, low metabolic rate, and low body temperature. He also lacks alertness, intelligence, and initiative. What can be this disease? What can be its cause and care?

Short answer question

Where is the pituitary gland located? Enlist the hormones secreted by the anterior pituitary.

Short answer question

Explain how the adrenal medulla and sympathetic nervous system function as a closely integrated system.

Short answer question

Name the secretion of alpha, beta, and delta cells of islets of langerhans. Explain their role.

Short answer question

Which are the 2 types of goitre? What are its causes?

Short answer question

Name the ovarian hormone and give their functions.

Answer the following.

Complete the table.

Long answer question.

Explain the process of conduction of nerve impulses up to the development of action potential.

Long answer question

Draw the neat labelled diagram of the human ear.

Long answer question

Draw the neat labelled diagram of the Sectional view of the human eye.

Long answer question

Draw the neat labelled diagram of L. S. of the human brain.

Long answer question

Draw the neat labelled diagram of Multipolar Neuron.

Long answer question

Answer the question after observing the diagram given below.

What do the synaptic vesicles contain?

Long answer question.

Answer the question after observing the diagram given below.

What process is used to release the neurotransmitter?

Long answer question

Answer the question after observing the diagram given below.

What should be the reason for the next impulse to be conducted?

Long answer question

Answer the question after observing the diagram given below.

Will the impulse be carried by the postsynaptic membrane carried even if one pre-synaptic neuron is there?

Long answer question

Answer the question after observing the diagram given below.

Can you name the channel responsible for their transmission?

Long answer question

Explain the Reflex Pathway with the help of a neat labelled diagram.

Long answer question

Krishna was going to school and on the way, he saw a major bus accident. His heartbeat increased and hands and feet become cold. Name the part of the nervous system that had a role to play in this reaction.

Long answer question.

What will be the effect of thyroid gland atrophy on the human body?

Write the names of hormones and the glands secreting them for the regulation of the following functions.

1. Growth of thyroid and secretion of thyroxine.
2. Helps in relaxing pubic ligaments to facilitate the easy birth of young ones.
3. Stimulate intestinal glands to secrete intestinal juice.
4. Controls calcium level in the blood
5. Control tubular absorption of water in kidneys.
6. Urinary elimination of water.
7. Sodium and potassium ion metabolism.
8.  Basal Metabolic rate.
9. Uterine contraction.
10. Heartbeat and blood pressure.
11. Secretion of growth hormone.
12. Maturation of Graafian follicle.

Long answer question

Explain the role of the hypothalamus and pituitary as a coordinated unit in maintaining homeostasis?

What is adenohypophysis?  

Name the hormones secreted by adenohypophysis.

Describe in brief, an account of disorders of the adrenal gland.

Long answer question

Explain the action of steroid hormones and proteinous hormones.

Long answer question

Describe in brief an account of disorders of the thyroid.

Name the hormone secreted by Pars intermedia in lower vertebrates.