Basic Terms of the Nervous System

Q.

What are the four different types of receptors?

Q.

Which of the following statements are true?

(i) Sudden action in response to something in the environment is called reflex action

(ii) Sensory neurons carry signals from the spinal cord to muscles

(iii) Motor neurons carry signals from receptors to the spinal cord

(iv) The path through which signals are transmitted from a receptor to a muscle or a gland is called the reflex arc.

1. only (ii)

2. only (iii)

3. (i) and (iv)

Q.

Explain the mechanism of reflex action with the help of an example.

Q.

How many types of reflex arcs are there?

Q.

Which of the following statements are true?

(i) Sudden action in response to something in the environment is called reflex action.

(ii) Sensory neurons carry signals from the spinal cord to muscles.

(iii) Motor neurons carry signals from receptors to the spinal cord.

(iv) The path through which signals are transmitted from a receptor to a muscle or a gland is called the reflex arc.

1. (i) and (ii)

2. (i) and (iii)

3. (i) and (iv)

4. (i) , (ii) and (iii)

Q. Sensory organs like eye, ears, nose, tongue, and skin receive particular kinds of stimuli with the help of special cells called receptors.

1. True
2. False

Q. What are the functions of cerebrospinal fluid?

1. It absorbs shocks and jerks
2. It keeps the CNS moist
3. It supplies food and oxygen to different parts of CNS
4. It is involved in memory

Q. Why LH secretion during follicular phase is so high then FSH as LH secretion stimulate the corpus luteum to release progesterone thus LH should be high at luteal phase where corpus luteal is formed in luteal phase so LH secretion should attains peak level at luteal phase

Q. What are the different receptors present in our body? What are their functions?

Q. Which among the following receptors are associated with the sense of smell?

1. Olfactory
2. Gustatory
3. Tactile
4. Cutaneous

Q.

A signal which is in the type of an electrical disturbance is known as ___

Q.

_______ helps in transmitting optical impulses to the brain.

Q. The specialized cells in the roof of our nose for olfaction are called olfactory _________cells.

Q.

The events listed below occur during contraction of the pupil of the eye in response to increased light intensity.

(i) Impulses pass along motor neuron

(ii) Contraction of circular muscles

(iii) Stimulation of the retina

(iv) Impulses pass along sensory neuron

What is the correct order of these events?

Codes

First ⇢ Last

1. 1 4 2 3

2. 2 1 3 4

3. 3 1 4 2

4. 3 4 1 2

Q.

____________________ are present in the sense organs to receive external stimuli from the environment.

1. A. Receptor cells

2. B. Sense cells

3. None of the above

4. Both (A) and (B)

Q. Bundle of neurons or axons is known as?

1. Cyton
2. Nervous system
3. Nerve
4. Dendrites

Q. Briefly state the event that proceeds a stimulus in organisms.

Q. Long Answer Question:
Define receptors.Enlist different type of receptors.

Q. Name any two types of receptors and state their functions.

Q.

Mention the type of reflexes involved in a reflex arc.

Q. Define receptors.

Q. Injury to vagus nerve in humans is not likely to affect _____________.

1. tongue movements
2. gastrointestinal movements
3. breathing
4. cardiac movements.

Q.

Our body carries out reflex actions without the control of brain. Which other part of the nervous system is responsible for this?

1. Cerebrum

2. Ganglions

3. Spinal cord

4. Nerves

Q. Briefly state the event that proceeds a stimulus in organisms.

Q. Which one is the function of parasympathetic nervous system in mammals

1. Acceleration of heart beat
2. Stimulation of sweat glands
3. Contraction of arrector pilli muscles
4. Constriction of pupil

Q. Receptors are specialized tips of ...

1. Muscle cells
2. Glands
3. Sense organs
4. Nerve cells

Q. Difference between sympathetic and parasympathetic nervous system

Q. When a foreign particle enters our nasal cavity, the body's involuntary response is to sneeze. Which of the following controls the above process?

1. Medulla in forebrain
2. Hypothalamus in midbrain
3. Medulla in hindbrain
4. Pituitary in hindbrain

Q. Does liquid also travels through our food pipe or oesophagus by the method of peristalsis. If yes then how?

Q. Identify the part of the brain that is responsible for maintaining posture and equilibrium of the body.

1. Cerebrum
2. Spinal cord
3. Cerebellum
4. Medulla