Question

Answer parts A-E of #1 to receive full credit:

A. Which statement is most accurate?

	1.	Circumvallate papillae are found on the lateral borders of the tongue
	2.	In order for you to taste something, the tastant must be able to be dissolved in water
	3.	Taste buds are found only on the anterior one-third of the tongue
	4.	The filiform papillae found on the anterior aspect of the tongue possess taste buds
	5.	The gustatory cortex is localized to the temporal lobe

B. _____ is a result of parasympathetic stimulation

1. Contraction of the pupils

2. Decreased persistence of the digestive system

3. Faster heart rate

4. Increased sweating

5. Thick, mucousy saliva

C. The purpose of protecting pain information to the anterior cingulate cortex is

1. To design a reflexive response

2. To determine motivational component of the pain

3. To distinguish pain from other types of stimuli

4. To modulate the degree of pain

5. To perceive the pain sensation

D. Which is a characteristic of an odor?

1. Composed of a single odorant

2. Recognized by mitral cells  

3. Sufficiently flammable

4. Water soluble

E. In the visual pathways of the brain, the optic radiations projects from the...

1. Lateral Geniculate nucleus

2. Medial retina

3. Optic chiasma

4. Primary visual cortex

5. Superior colliculus

Answer 1

ANSWERS

A. IN ORDER FOR YOU TO TASTE SOMETHING ,THE TASTANT MUST BE ABLE TO DISSOLVE IN WATER.

Explanation: In order for to have taste sensation in food , chemicals from the food must first dissolve in saliva. Taste perception occurs as these water-soluble chemicals in the mouth contact with the epithelial cells of the taste buds.

*Circumvallate papillae, located on the surface of the back part of the tongue.

* Taste buds are located at anterior two-third of tounge.

*Filliform papillae do not posses taste buds.

* Gustatory cortex located at parietal lobe.

B. CONTRACTION OF PUPILS

Explanation: Parasympathetic stimulation causes contraction of the circular muscle and constriction of the pupil. Remaining options are associated with sympathetic stimulation.

C. TO DETERMINE MOTIVATIONAL COMPONENT OF PAIN.

Explanation: Pain is unpleasant sensation that protects the organism by promoting motivation and learning.Anterior cingulate gyrus  is the cortical area that has been most frequently linked to the experience of pain. It is associated with the emotional reaction to pain.

D RECOGNIZED BY MITRAL CELLS

Explanation; Mitral and external tufted cells are primary neurons of olfactory bulb ,which strongly correlates identity and concentration of an odour.

E. LATERAL GENICULATE NUCLEUS

Explanation: The optic radiations project from the dorsal nuclei of the lateral geniculate nucleus to the primary visual cortex V1.