Natural Reflexes

Q.

Distinguish between voluntary and involuntary actions of our body.

Q.

State the characteristics of the image formed by a plane mirror.

Q. Arrange the path taken by an impulse in a reflex arc.

1. Spinal cord
2. Sensory neuron
3. Effector muscle
4. Motor neuron

Q.

Which muscles or glands contract and secrete substances after they receive impulse from brain?

1. Stimulus

2. Response

3. Effector

4. Impulse

Q.

During a reflex action, and does the nerve impulse go to the brain? If no why so?

Q. ______is the reflex centre of brain

Q.

Differentiate between the following :

Natural and acquired reflex.

Q. Which of the following is not a part of knee jerk reflex?

1. Afferent pathway
2. Muscle spindle
3. Efferent pathway
4. Interneuron

Q. A reflex action is a quick involuntary response to stimulus. Which of the following is an example of both, unconditioned and conditioned reflex?

1. Knee Jerk reflex
2. Sneezing reflex
3. Secretion of saliva in response to the aroma of food
4. Contraction of the pupil in response to bright light

Q.

Inborn reflex is one which develops during lifetime due to experience or learning.

1. True

2. False

Q.

Differentiate between involuntary action and reflex action

Q. List four characteristic of the images formed by plane

Q. Conditioned reflexes are different than unconditioned reflexes in that

1. Unconditioned reflexes are limited to brain.
2. Conditioned reflexes are limited to brain.
3. None of the above.
4. Both A and B.

Q.

Identify the statements as true/false.

The commands for voluntary actions originate in brain.

1. True
2. False

Q.

How are involuntary action and reflex action different from each other?

Q. Differentiate between.
Unconditioned (simple) and conditioned reflexes

Q. What is reflex arc? Write the components of reflex arc and their functions.

Q.

Important processes like blood flow, heartbeat, digestion, and breathing are carried out by ___ system.

1. Autonomas

2. Axon bundle

3. Motor

4. Sensory

Q.

What is the poly synaptic reflex?

Q.

_____ of CNS mainly controls the reflex.

Q.

Meditation helps in

1. Improving concentration

2. Time management

3. Increase stress

4. Increase positivity

Q.

An automatic response that doesn't involve the brain is called ____________.

1. Insensitive

2. Brainless

3. Reflex

4. Autostem

Q. Which is the example of conditioned reflex?

1. Hand took up when pierced with a needle.
2. Digested food goes forward in alimentary canal.
3. Eyes closed when anything enter into it.
4. Salivation in a hungry dog in response to ringing of a bell.

Q. Conditional reflex was first studied by

1. Darwin
2. Lull
3. Pavlov
4. Morgan

Q. An example of conditioned reflex is

1. Withdrawal of hand on touching a hot surface
2. Sneezing during cold
3. Running indoor on arrival of rain
4. Salivation in Dog on seeing bread as found by Pavlov

Q. Which is an example of positive feedback?

1. Allosteric inhibition of enzymes
2. Both A and B
3. Seasonal growth
4. Vessel diameter and blood pressure

Q. Which of the following is an example of conditioned reflex?

1. Hand withdraws when pierced with a needle
2. Trained dog salivates when you ring a bell
3. During digestion, food goes forward in alimentary canal
4. Eyes close, when anything enters into them

Q. Very short answer type.
Give one example each of unconditioned and conditioned reflex.

Q. Sort the following in the order in which messages travel in a reflex arc.

1. Receptor
2. Sensory neuron
3. Relay neuron
4. Motor neuron
5. Effector

Q.

Name the part of the brain that controls the heart rate.