Question

1. otoliths are granules (little rocks) of calcium carbonate found in the saccule and utricle of the inner ear. these structures function in a. gravitational equilibrium b. the balancing of air pressure in the ear c. hearing d. rotational equilibrium 41. the main chemoreceptors are for the senses of a. smell and pain b. taste and hearing c. smell and taste d. balance and low blood volume hint: are you aware of the scratch and scent books for children? recent research (in marketing) has shown that lavender promotes good studying. find out more. 42. all the following are mechanoreceptors of the skin except a. olfactory cells b. pacinian corpuscles c. free nerve endings d. krause end bulbs hint: note that the pacinian corpuscles are diagrammed as layered like an onion. pressure influences receptor cells in the layers. a diagram of a pacinian corpuscle is often used as a receptor in the reflex arc. also see fig 11.6 page 369. the receptor is a pacinian corpuscle.

Explanation:

• Question 40: Otoliths in the saccule and utricle of the inner - ear are involved in detecting changes in linear acceleration and gravitational equilibrium.
• Question 41: Chemoreceptors are specialized cells that detect chemical substances. The main chemoreceptors are associated with the senses of smell (olfaction) and taste (gustation).
• Question 42: Mechanoreceptors in the skin respond to mechanical stimuli such as pressure, vibration, and touch. Olfactory cells are related to the sense of smell and are not skin mechanoreceptors.

Answer:

• 40. A. gravitational equilibrium
• 41. C. smell and taste
• 42. A. olfactory cells