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59 terms

Brain and Cranial Nerves

Exercise 28 (p. 213)
STUDY
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Name the purely SENSORY cranial nerves.
Olfactory Nerve (I), Optic Nerve (II), and the Vestibulocochlear Nerve (VIII)
Name the purely MOTOR cranial nerves.
Oculomotor Nerve (III), Trochlear Nerve (IV), Abducens Nerve (VI), Spinal Nerve (XI), and the Hypoglossal Nerve (XII)
Name the MIXED (sensory and motor) cranial nerves.
Trigeminal Nerve (V), Facial Nerve (VII), Glossopharyngeal Nerve (IX), and the Vagus Nerve (X)
The major function of the OLFACTORY nerve (I) is
smell, which contributes to taste.
The major function of the OPTIC nerve (II) is
vision.
The major functions of the OCULOMOTOR nerve (III) are
eye movements, including pupil dilation and constriction.
The major functions of the TROCHLEAR nerve (IV) are
eye movements.
The major functions of the TRIGEMINAL nerve (V) are
sensory of the face and chewing movements.
The major functions of the ABDUCENS nerve (VI) are
eye movements.
The major functions of the FACIAL nerve (VII) are
sensory qualities of taste and the tongue and movements that affect facial expressions, also allowing for salivation (a function of the autonomic nervous system).
The major functions of the VESTIBULOCOCHLEAR nerve (VIII) are
hearing and equilibrium.
The major functions of the GLOSSOPHARYNGEAL nerve (IX) are
sensory qualities of taste and tongue sensations, movements involved in swallowing, and also allowing for salivation and carotid body control of blood pressure (functions of the autonomic nervous system).
The major functions of the VAGUS nerve (X) are
sensory qualities of the outer ear, thoracic and abdominal viscera, movements involved in swallowing, and also thoracic and abdominal viscera function (function of the autonomic immune system).
The major functions of the SPINAL (accessory) nerve (XI) are
voluntary and reflex movements of the head and neck.
The major functions of the HYPOGLOSSAL nerve (XII) are
movements of the tongue.
There are ____ cranial nerve (CN) pairs that exit the brain and brainstem (written 'CN' followed by a Roman numeral).
twelve
CN's can be
sensory, motor, or both.
The ____ is the old name for the cerebrum.
cortex
The cerebrum has ____ lobes.
five
The lobes of the cerebrum include the:
(1) FRONTAL lobe, (2) PARIETAL lobe, (3) OCCIPITALlobe, (4) TEMPORAL lobe, and (5) INSULA lobe (island of Reil).
The insula lobe is located
in the inner, middle area of the cerebrum.
The CENTRAL SULCUS (of Rolando) separates
motor (frontal) and sensory (parietal).
The LATERAL SULCUS (of Sylvius) separates
the parietal and temporal lobes.
The LONGITUDINAL FISSURE lies between the
two cerebral hemispheres.
The TRANSVERSE FISSURE lies between the
cerebrum and cerebellum.
The ____ contains anything named 'thalamus.'
diencephalon
The diencephalon is located in the
central area of the brain.
The hindbrain refers to the
cerebellum.
The VERMIS connects the
cerebellar hemispheres.
The ARBOR VITAE is the
white matter of the cerebellum.
The brainstem has ____ major parts.
three
The brainstem includes the:
(1) midbrain, (2) pons, and (3) medulla oblongata.
The separation between the brainstem and the spinal cord is the
foramen magnum (inside the foramen magnum is the spinal cord, and outside the foramen magnum is spinal cord).
GYRI are the
RIDGES.
SULCI are the
VALLEYS.
The CORPUS CALLOSUM is the
white matter connecting the cerebral hemispheres.
The VENTRICLES are the
warehouse for cerebrospinal fluid (CSF).
The INTERVENTRICULAR FORAMEN connects the
lateral ventricles to the fourth ventricle.
The CHOROID PLEXUS makes
CSF via ependyma cells that line the ventricles.
____ absorbs CSF and diffuses it into the venous sinuses.
ARACHNOID VILLI
There are ____ ventricles.
four
The four ventricles of the brain include the
lateral ventricles (there are two), and third and fourth ventricles.
The MOTOR area (for voluntary muscle control) of the brain is the
pre-central sulcus area.
The MOTOR SPEECH area of the brain is the
Broca's area.
The SENSORY SPEECH area of the brain is the
Wernicke's area.
The CUTANEOUS SENSORY area of the brain is the
post-central sulcus area.
The AUDITORY area of the brain is the
...
The VISUAL area of the brain is the
...
What is the mnemonic device for remembering the order of the cranial nerves?
On Old Olympus Towering Tops, A French And German Viewed Some Hops (Olfactory (I), Optic (II), Oculomotor (III), Trochlear (IV), Trigeminal (V), Abducens (VI), Facial (VII), Auditory/Vestibulocochlear (VIII). Glossopharyngeal (IX), Vagus (X), Spinal (XI), and Hypoglossal (XII).
What is the mnemonic device for remembering which cranial nerves are sensory, motor, or mixed?
Some Say Marry Money, But My Brother Says, "Bad Business Marry Money," (Olfactory (sensory), optic (sensory), oculomotor (motor), trochlear (motor), trigeminal (both), abducens (motor), facial (both), auditory (sensory), glossopharyngeal (both), vagus (both), spinal (motor), hypoglossal (motor).
Tracts exist in the ____ only.
CNS
Nerves exist in the ____ only.
PNS
Nuclei are collections of nerve cells in the ____.
CNS
Ganglia are collections of nerve cells in the ____.
PNS
____ spinal nerves are ____ nerves.
ALL, mixed
The anterior root and the posterior root come together to form the
spinal nerve (making both sensory and motor present).
The spinal nerve is formed at the
intervertebral foramina (IVF) and where the meninges end.
The anterior root is
motor.
The posterior root is
sensory.