Question

Practice Questions Th e stions are for practice. All possible content may not be represented in this subset ofte are receptors that respond to mechanical energy or deformation of their cell membrane. nors respond with a burst of activity but rapidly adapt and reduce firing ratele chemoreceptors) th u m distance at which two points of touch can be perceived as separate is called The back of the legs have a higher/lower density of receptors than the fingertips. Which of the have the shortest two-point touch threshold? S. Most of the hearing loss in the elderly, caused by damage to the hair cells of the paris hearing loss. 6. Pressure waves in the perilymph fluid cause hair cells to 7. The middle ear ossicles transmit sound directly to the are receptors than transduce light energy The ability of the eyes to keep an image focused on the retina as a viewed object changes distance is called detect color vision, 11. Describe myopia, hyperopia, indicate the common term for each. Indicate where the image is focused in each condition. What type of lens might be used to correct the placement of the image on the retina? provide information about linear acceleration. 13. When light hits the pigment rhodopsin, found in (rods/cones), the dissociation of rhodopsin causes 10 ions enter the taste cell, our brain perceives salty. 15. _ions enter the taste cell, our brain perceives sour. 16. Put the following statements, regarding the transduction of taste, in the proper sequence a. Gustatory complex perceives taste b. Ca++ channels open, Ca++ flows in C. Food particles activate taste ligands d. Sensory neuron depolarized e. Neurotransmitter released from taste cell 17. _ _ are receptors that detect pain or itch. 18. (True of False) All of the different colors perceived by humans are the result of the activation of only four types of cones (blue, green, red, and yellow). 19. Rods, when hyperpolarized, (do do not release neurotransmitter, sending a message to the brain 20. Put the following terms in order starting with a sensory receptor in the finger detecting heat. corticospinal tract, somatosensory cortex, ventral root, dorsal root, ascending pathway, descending pathway, thalamus, motor cortex. Dorsal root, ascending pathway, thalamus, somatosensory cortex, motor cortex, descending pathway corticospinal tract, ventral root

Answer 1

1) Mechanoreceptors.

Mechanoreceptors are the receptors that respond to mechanical​ energy or deformation of their cell membrane.

Mechanoreceptors are somatosensory receptors which relay signals from external to internal by using ion channels.The stimula is by throught pressure,motion,touch ,sound waves etc.

2)Phasic receptors.

3)Two point touch threshold.

4)Lower.

5) Sensorineural.

6)Depolarization.

7)Oval window.

8) Photoreceptor.

9) Accomodation.

10)Cones.

11) Myopia.

In this condition near objects are seen clearly but they can see far objects.

It is called as Nearsightedness.

Concave lens are used for correction of myopia.

Hyperopia.

In this condition near objects are not clearly seen.

It is also called as fastsightedness.

Convex lens are used for correcting hyperopia.

12)Utricle and saccule.

13)Action potential in bipolar cells.

14)Na +.

15)H+.

16)C.food particles activate taste ligands.

B.Ca++ flows in.

E.NNeurotransmitter released from taste cells.

D.Sensory neuron depolarized

A.Gustatory complex perceive taste.

17) Nociceptors.

18)False only blue,green and red.

19)Do not release neurotransmitter.