Chapter 09: Senses Feedback Quiz

____________ respond to fine, discriminative touch and are found just deep to the epidermis. Select one: a. Meissner's corpuscles b. Pacinian corpuscles c. Merkel's disks d. Ruffini's end organs e. Free nerve endings

a. Meissner's corpuscles

Which of the following is NOT considered to be a special sense? Select one: a. Pain b. Smell c. Taste d. Vision e. Balance

a. Pain Special senses are more specialized in structure and are localized to specific parts of the body. Special senses are smell, taste, sight, hearing, and balance. Pain is considered to be a general sense due to the distribution of receptors over a large part of the body.

Which of these causes the greatest amount of convergence as light passes through the eye? Select one: a. cornea b. aqueous humor c. lens d. ciliary body e. vitreous humor

a. cornea The cornea causes the greatest amount of convergence as light passes through the eye.

The sclera and cornea of the eye are part of the Select one: a. fibrous tunic. b. nervous tunic. c. vascular tunic.

a. fibrous tunic. The sclera and cornea of the eye are part of the fibrous tunic.

The semicircular canals Select one: a. are divided into a utricle and saccule. b. are involved in dynamic equilibrium. c. contain specialized epithelium called the macula. d. contain otoliths. e. evaluate the position of the head relative to gravity.

b. are involved in dynamic equilibrium. The semicircular canals are involved in dynamic equilibrium.

The middle ear Select one: a. contains the cochlea and vestibule. b. connects to the inner ear by the oval window and round window. c. has the auditory tube, which contains the tympanic membrane. d. opens into the ethmoid air cells. e. is filled with endolymph.

b. connects to the inner ear by the oval window and round window. The middle ear connects to the inner ear by the oval window and round window.

You are walking down the street when a strange dog begins to chase you. You manage to duck into a store and notice in a nearby hanging mirror that your pupils are very dilated. Which of the following most likely accounts for this? Select one: a. The parasympathetic nervous system was stimulated by the scare and it, in turn, stimulated the circular smooth muscles of the iris to contract. b. The parasympathetic nervous system was stimulated by the scare and it, in turn, stimulated the radial smooth muscles of the iris to contract. c. The sympathetic nervous system was stimulated by the scare and it, in turn, stimulated the radial smooth muscles of the iris to contract. d. The sympathetic nervous system was stimulated by the scare and it, in turn, stimulated the circular smooth muscles of the iris to contract. Check

c. The sympathetic nervous system was stimulated by the scare and it, in turn, stimulated the radial smooth muscles of the iris to contract.

Accommodation of the eye occurs Select one: a. when objects farther than 20 feet are being viewed. b. when ciliary muscles relax. c. and causes the lens to become thicker. d. and causes the light to be refracted less.

c. and causes the lens to become thicker. Accommodation of the eye causes the lens to become thicker.

The part of the retina with the most densely packed photoreceptor cells is the Select one: a. optic disc. b. pigmented retina. c. fovea centralis. d. ciliary body. e. choroid.

c. fovea centralis. The fovea centralis is the part of the retina with the most densely packed photoreceptor cells.

Stimulation of nociceptors results in the sensation of Select one: a. touch. b. light. c. pain. d. heat. e. cold.

c. pain. Stimulation of nociceptors results in the sensation of pain.

The ________ is responsible for equalizing air pressure between the outside air and the middle ear cavity. Select one: a. oval window b. round window c. tympanic membrane d. auditory tube e. auricle

d. auditory tube The auditory tube, or Eustachian tube, opens into the pharynx and enable air pressure to be equalized between the outside air and the middle ear cavity.

The choroid of the eye Select one: a. is part of the fibrous tunic. b. appears white in color. c. anteriorly, is continuous with the sclera. d. consists of a vascular network and large numbers of melanin-containing cells. e. is part of the nervous tunic.

d. consists of a vascular network and large numbers of melanin-containing cells.

The spiral organ contains hair cells that have microvilli embedded in the Select one: a. oval window. b. vestibular membrane. c. basilar membrane. d. tectorial membrane. e. tympanic membrane.

d. tectorial membrane. The spiral organ contains hair cells that have microvilli embedded in the tectorial membrane.

Given these structures: 1. auditory ossicles 2. oval window 3. scala tympani 4. scala vestibuli 5. tympanic membrane, Arrange the structures in the order in which they move as pressure waves in the air are converted to pressure waves in a liquid. Select one: a. 1,2,4,3,5 b. 2,1,5,3,4 c. 2,4,1,3,5 d. 4,3,5,1,2 e. 5,1,2,4,3

e. 5,1,2,4,3 The correct sequence of structures is as follows: 5. Tympanic membrane, 1. Auditory ossicles, 2. Oval window, 4. Scala vestibuli, 3. Scala tympani.

Aqueous humor Select one: a. is found in the anterior compartment of the eye. b. is produced by the ciliary body. c. refracts light. d. can cause glaucoma if its flow is blocked. e. all of these

e. all of these Aqueous humor is found in the anterior compartment of the eye, is produced by the ciliary body, refracts light, and can cause glaucoma if its flow is blocked.