Page 104 - 84 human physiolofy part-1

Chapter 5

decrease and eventually cease
C) Ruffini corpuscles is a class of slowly adapting mechanoreceptor
D) Pacinian corpuscles allow sodium ions to influx in, creating a receptor potential

4. When eating a piece of candy, I will use the following to sense that it is sweet

A) Fungiform papillae
B) Filiform papillae
C) Foliate papillae
D) Circumvallate papillae
E) All of the above

5. If I have a cold, food may not taste as good to me because

A) The nerve fibrils are not functioning properly
B) My food will taste the same; taste and smell have nothing in common
C) Papilla become blocked by mucus and are unable to function
D) Olfaction, taste and trigeminal receptors together contribute to the flavor of my food

6. Walking from a well lit room into a dark room would cause the following to occur

A) The sclera in the eye to open and eventually allow me to see in the dark
B) The extraocular muscles in the eye to open and eventually allow me to see in the dark
C) The cones in the eye to open and eventually allow me to see in the dark
D) the rods in the eye to open and eventually allow me to see in the dark

7. Hair cells in the ear

A) Are the actual sensory receptors that will fire off action potentials when they are disturbed
B) Show a graded response, instead of the spikes typical of other neurons
C) “Rub” against the overhanging tectorial membrane
D) All of the above

8. Eyesight decreases with age because

A) Older eyes receive much less light at the retina
B) There are numerous eye diseases that can affect an older eye
C) The extent to which the pupil dilates decreases with age
D) all of the above

9. Teens walking off of a roller coaster in Magic Mountain seem to have vertigo because

A) The fluid in the auricle has not stopped moving causing conflicts with the information coming
from your vision
B) the fluid in the cochlea has not stopped moving causing conflicts with the information coming
from your vision
C) The fluid in the tympanic membrane has not stopped moving causing conflicts with the
information coming from your vision
D) The fluid in the stirrup has not stopped moving causing conflicts with the information coming

104 | Human Physiology