Human Anatomy and Physiology 1 HOMEWORK 14

Which of the following statements are true regarding olfaction? Check all that apply.

- Smell is a chemical sense - Odorant molecules dissolve in mucus before stimulating a receptor - Olfactory receptors have hairs on the apical surface that respond to stimuli

Which of the following statements are true regarding gustation? Check all that apply.

- Taste is chemical sense - When gustatory hairs are stimulated, a receptor potential is created - All of the primary tastes can be detected throughout the tongue

Complete each sentence by dragging the proper word to the appropriate position.

- The SACCULE contains vertically arranged maculae that would provide feedback of body movement in the vertical plane - The MACULA ULTRICULI are stimulated during linear acceleration in the transverse plane. - An example of LINEAR ACCELERATION would include sitting in a wheeled chair and having someone push you from behind. - An example of ANGULAR ACCELERATION would be sitting in a chair and having someone spin you in a circle. - Each of the SEMICIRCULAR CANALS is especially positioned to detect angular acceleration in one of the three planes. - When someone is standing still, the kinocilia of the macula sacculi is bending inferiorly and thus conveying information regarding one's STATIC EQUILIBRIUM. - The concept of DYNAMIC EQUILIBRIUM can be exemplified by any acceleration, or change in velocity.

Which of the following structure(s) is/are associated with the sympathetic nervous system? Check all that apply.

- The adrenal medulla - The thoracolumbar spinal cord

Correctly identify the following structures of the cochlea.

- this innervates the cochlea = cochlear nerve - this is the superior chamber of the cochlea = scala vestibuli - this separates the scala media from the scala vestibuli = vestibular membrane - this is the mass of neuron bodies on the cochlear nerve tract = spiral ganglion - this is the inferior chamber of the cochlea = scala tympani - this is also known as the acoustic organ = spiral organ - this is the middle chamber of the cochlea = cochlear duct

Drag each of the following labels into the appropriate box to identify which motor division of the peripheral nervous system is identified by the given function.

SOMATIC - Voluntary - principally involved with movement "of" body - skeletal muscles activation AUTONOMIC - Involuntary - lacrimal gland activation - intestinal smooth muscle activation - principally involved with movement "through" body - sweat gland activation - arrector pili activation - can be excitatory or inhibitory on target organ

Drag each of the following labels into the appropriate box to identify which motor division of the autonomic nervous system is described.

SYMPATHETIC - Increased heart rate - Increased blood flow to skeletal muscle - Reduced urinary output - Increased pulmonary airflow - Fight-or-flight PARASYMPATHETIC - Activation of digestive organs - Storage of energy - Decreased pulmonary airflow - Urinary bladder wall contraction - Rest and digest

Which division of the ANS is referred to as the "rest and digest" division?

parasympathetic

The _________ division of the ANS increases alertness. The __________ division has a calming effect on the body.

sympathetic;parasympathetic

A receptor is an axon that carries sensory impulses to the spinal cord's dorsal horn of gray matter.

FALSE