Biology 13.1-13.2 Study Module
Which somatic motor neuron innervates the lateral rectus muscle?
*Abducens nerve (VI)* Trochlear nerve (IV) Optic nerve (II) Oculomotor nerve (III)
Which nerve has the sensory functions of taste in the posterior one-third of the tongue and detecting changes in blood pressure of the carotid artery?
*Glossopharyngeal nerve (IX)* Hypoglossal nerve (XII) Facial nerve (VII) Accessory nerve (XI)
What connects the upper motor neurons to lower motor neurons?
*Interneurons* Muscle fibers Sensory neurons Primary afferent neuron
What connective tissue sheath wraps the axon of a neuron?
Epineurium Fascicle *Endoneurium* Perineurium
Which nerve innervates most of the intrinsic and extrinsic muscles of the tongue?
Facial nerve (VII) Accessory nerve (XI) *Hypoglossal nerve (XII)* Glossopharyngeal nerve (IX)
Which cranial nerve is generally thought of as a mixed nerve?
Hypoglossal nerve (XII) Accessory nerve (XI) Vestibulocochlear nerve (VIII) *Glossopharyngeal nerve (IX)*
The optic nerve is represented by Roman numeral __________.
I *II* VI V
Which is not a motor function of the facial nerve?
Innervate the muscles of facial expressions Trigger the lacrimal (tear) glands over the eye Secretion from certain salivary glands in the mouth *Responsible for swallowing movements*
Which branch is not part of the trigeminal nerve?
Mandibular nerve Maxillary nerve Ophthalmic nerve *Buccal nerve*
Where does the motor portion of the facial nerve (VII) originate?
Midbrain *Nuclei in the pons and medulla* Tongue Cerebral cortex
Which is not a primary function of the oculomotor nerve (III)?
Moves the eye Opens the eye Changes the lens shape *Dilates the pupil*
What two nerves do not arise from the brain stem?
Oculomotor and trochlear nerves Vestibulocochlear and optic nerves *Olfactory and optic nerves* Vestibulocochlear and oculomotor nerves
Which of the following cranial nerves contain axons of motor neurons?
Olfactory (I) Optic (II) Vestibulocochlear (VIII) *Trochlear nerve (IV)*
Which cranial nerve originates as two separate nerves that share a common epineurium, but fuse together after they leave the temporal bone?
Optic (II) Olfactory nerve (I) *Vestibulocochlear (VIII)* Trochlear (IV)
Which cranial nerve detects smell?
Optic nerve (II) Trochlear nerve (IV) *Olfactory nerve (I)* Oculomotor nerve (III)
What nerve is unique in that it has a spinal origin?
Trigeminal (V) Hypoglossal nerve (XII) *Accessory nerve (XI)* Vagus nerve (X)
Axons of these cranial nerves pass through the cribriform foramina of the ethmoid bone.
Vestibulocochlear nerve (VIII) *Olfactory nerve (I)* Hypoglossal (XII) Optic (II)
Which division detects stimuli of the general senses and special senses?
Visceral sensory division Visceral motor division (autonomic nervous system) *Somatic sensory division* Somatic motor division
The vagus nerve is represented by Roman numeral __________.
XII I *X* V
The ________ innervates the throat, anterior neck, and almost all of the thoracic and abdominal viscera.
facial nerve (VII) trigeminal (V) *vagus nerve (X)* hypoglossal nerve (XII)
The ______________ of the peripheral nervous sytems consists of lower motor neurons that directly innervate skeletal muscle fibers.
visceral motor division somatic sensory division visceral sensory division *somatic motor division*
What nerve stimulates the masseter and temporalis muscles to elevate the mandible during mastication and swallowing?
Accessory nerve (XI) Glossopharyngeal nerve (IX) *Trigeminal (V) nerve* Facial nerve (VII)
The sympathetic nervous system and parasympathetic nervous system are divisions of the __________.
somatic motor division *visceral motor division (autonomic nervous system)* visceral sensory division somatic sensory division
Bell's palsy affects the __________ nerve.
*facial nerve* vagus nerve hypoglossal nerve trochlear nerve
Bundles of axons within a nerve are known as __________.
*fascicles* dendrites the perineurium the endoneurium
What is the connective tissue sheath that surrounds a peripheral nerve?
Perineurium Fascicle Endoneurium *Epineurium*
Which of the following houses motor neurons?
Posterior root ganglion *Anterior root of spinal nerve* Central canal of the spinal cord Posterior root of spinal nerve
Where are the sensory neurons found in a spinal nerve?
Posterior root ganglion Anterior root of spinal nerve Central canal of the spinal cord *Posterior root of spinal nerve*
What extraocular muscle does the trochlear nerve (IV) innervate?
Superior rectus muscle Lateral rectus muscle Inferior oblique muscles *Superior oblique muscle*