Start Key Terms: Anatomy & Physiology: The Brain and Cranial

Question: anosmia

Choices:

loss of the sense of smell; usually the result of physical disruption of the first cranial nerve

Question: alkaloid

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substance, usually from a plant source, that is chemically basic with respect to pH and will stimulate bitter receptors

Question: Betz cells

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output cells of the primary motor cortex that cause musculature to move through synapses on cranial and spinal motor neurons

Question: auricle

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fleshy external structure of the ear

Question: audition

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sense of hearing

Question: ascending pathway

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fiber structure that relays sensory information from the periphery through the spinal cord and brain stem to other structures of the brain

Question: amacrine cell

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type of cell in the retina that connects to the bipolar cells near the outer synaptic layer and provides the basis for early image processing within the retina

Question: anterior corticospinal tract

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division of the corticospinal pathway that travels through the ventral (anterior) column of the spinal cord and controls axial musculature through the medial motor neurons in the ventral (anterior) horn

Question: aqueous humor

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watery fluid that fills the anterior chamber containing the cornea, iris, ciliary body, and lens of the eye

Question: ampulla

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in the ear, the structure at the base of a semicircular canal that contains the hair cells and cupula for transduction of rotational movement of the head

Question: association area

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region of cortex connected to a primary sensory cortical area that further processes the information to generate more complex sensory perceptions