The most sensitive part of a taste bud is the
|D)||taste cell membrane|
Saliva enhances the taste of food by
|A)||increasing the sensitivity of taste receptors|
|B)||dissolving the chemicals that cause taste so they can be tasted|
|C)||releasing taste factors by partially digesting food|
|D)||capturing and dissolving the gases of odors of food|
Which of the following would produce the taste sensation of umami?
|D)||monosodium glutamate (MSG)|
The function of the small bones of the middle ear (the auditory ossicles) is to
|A)||provide a framework for the tympanic membrane|
|B)||protect the structures of the inner ear|
|C)||support the structure of the tympanic cavity|
|D)||relay and amplify the vibrations and transmit them to the inner ear|
The ossicle that fits against the oval window is the
Hearing receptor cells are located in the
|A)||Spiral organ (organ of Corti)|
Bending your head to look at the floor will stimulate receptors in the
The structure that detects motion of the head is the
The sensory organ of the semicircular canals is the
The muscle that raises the eyelid is the
|C)||levator palpebrae superioris|
The superior rectus muscle causes the eye to rotate
|A)||upward and toward the midline|
|B)||downward and toward the midline|
|C)||upward and away from the midline|
|D)||downward and away from the midline|
Which of the following is in the correct order?
|A)||lacrimal gland, superior and inferior canaliculi, lacrimal sac, nasolacrimal duct|
|B)||superior and inferior canaliculi, lacrimal sac, nasolacrimal duct, lacrimal gland|
|C)||lacrimal sac, superior and inferior canaliculi, lacrimal gland, nasolacrimal duct|
|D)||lacrimal gland, nasolacrimal duct, lacrimal sac, superior and inferior canaliculi|
The transparency of the cornea is due to
|A)||the nature of the cytoplasm in the cells of the cornea|
|B)||the small number of cells and the lack of blood vessels|
|C)||a lack of nuclei within the cells of the cornea|
|D)||keratinization of cells in the cornea|
The shape of the lens changing as the eye focuses on a close object is a process known as
The region of the retina associated with the sharpest vision is the
The maintenance of the shape of the eyeball is enabled by the
Which of the following sets of terms is not paired correctly?
|A)||colorless vision - rods|
|B)||fovea centralis - cones|
|C)||cones - rhodopsin|
|D)||sharp images - cones|
Projection is the process that allows us to determine where a stimulus has occurred.
There are separate receptors for heat and cold.
The brain is richly supplied with pain receptors.
Pain arising in the heart may be felt in the left shoulder because the impulses from the skin and viscera may share common neural pathways.
Serotonin participates in the suppression of pain impulses by stimulating the release of enkephalins.
The cilia of olfactory receptor cells detect the gases that give rise to odors.
The structures of the ear are responsible for the sense of balance or equilibrium, as well as the sense of hearing.
Axons in the right optic tract carry all of their visual information from the right eye to the occipital lobe.
Vibration of the auditory ossicles produces movement of air within the inner ear.
Sounds of different frequencies are detected because the basilar membrane under the hearing receptors (hair cells) are sensitive to deformation by different sound frequencies.
Hearing receptor cells are epithelial cells, but function like neurons in that they are polarized and release neurotransmitters.
Hearing impulses are transmitted along the vestibular branch of the vestibulocochlear nerve to the auditory cortex of the temporal lobe.