Question

Please answer all

1. An adult human and a sheep brain are about the same size.

A. True

B. False

2. Which of the following structure is NOT seen in the sheep brain.

A. Cerebrum

B. Cerebellum

C. Thalamus

D. Corpus callosum

E. All of the above are seen in a sheep brain

3. During sheep brain dissection in the lab, there was lot of bleeding.

A. True

B. False

4. Sheep brain dissected in the lab was covered with the following meninges.

A. Pia mater

B. Arachnoid

C. Dura mater

D. Only ‘a’ and 'b'

E. Only ‘b’ and ‘c’

5. Which of the following statements is NOT true regarding sweat glands?

A. They are an exocrine gland.

B. They are found in the dermis.

C. Sweat contains a small amount of salt.

D. Perspiration warms the body.

6. Which of the following sensory receptors does NOT detect touch and pressure?

A. Merkel disc

B. Pacinian corpuscle

C. Ruffini’s corpuscle

D. Meissner’s corpuscle

7. Which of the following statements regarding sensory receptors is NOT true?

A. Sensory receptors in the skin are dendrites of sensory nerves.

B. Sensory receptors of the skin are located in the dermis.

C. The sensory receptors of the skin are all encapsulated.

D. Sensory receptors of the skin are all exteroceptors.

8. Which sensory receptor is incorrectly paired with its sensation?

A. Merkel disc - touch and pressure

B. Meissner’s corpuscle - temperature

C. hair root plexus - hair movement

D. Ruffini’s corpuscle - stretch

9. Which sensory receptor is NOT correctly paired with its location?

A. Pacinian corpuscle - deep in dermis

B. nociceptor - dermis and basal layer of epidermis

C. thermoreceptor - junction of epidermis and dermis

D. Ruffini’s corpuscle - papillary region of dermis

10. Which of the following statements is NOT true? As the density of sensory receptors increases,

A. the distance between being able to feel two points decreases.

B. the ability to accurately locate a sensation decreases.

C. two point discrimination improves.

D. All the above are correct.

11. Which of the following statements regarding adaptation is NOT true?

A. The stimulation is still present.

B. Not all sensory receptors adapt.

C. The sensation disappears.

D. The brain no longer receives a signal.

Answer 1

1.False.The adult human and sheep brain are not of the same size.They are different in size and shape .Sheep brain is about one tenth of the Human brain.

2.All the given options are present in the sheep brain.Cerebrum,cerebellum,thalamus are seen while examining the external brain.Corpus callosum is present internally connecting the two cerebral hemispheres.

3.No, we can find the blood supply of the brain and so we can ensure that it doesn't bleed.And sheep brain is examined than human brain because they are almost similar .

4.d)Sheep brain examined to dissect in the lab is covered by arachnoid mater and piamater.Diamater is removed during the removal of brain because it is attached to skull.

5)d) perspiration warms the body doesn't belong to sweat glands.Sweat glands are exocrine glands present in the dermis of skin and they contain a little amount of salt .And these causes cooling of the body by evaporation.

6)c)Ruffinis corpuscle doesn't detect touch and pressure but it detects strech in the skin.

7)c) It is not true.All sensory receptors are not encapsulated.Merkels disc is a sensory receptor ,it is unencapsulated.

8)b) It is incorrectly matched with its sensation.Meissners corpuscle is not for temperature sensation.It is for light touch.

9)all are true except c. Thermoreceptors are not present in the junction of epidermis and dermis.

10)when density of sensory receptors increases,the abilty to locate accurately a sensation decreases.

11)