A&P I Chapter 13 ( Brain and Cranial nerves)
What are the gyri of the cerebrum?
ridges of tissue
Identify the cranial nerves that control the muscles that move the eyeball.
oculomotor trochlear abducens
functions of cerebrospinal fluid?
-Protects the brain against the shock of rapid head movements -provide nutrients to the cNS tissue
cerebellum
-maintaining posture and equilibrium and is attached to the brainstem posterior to the pons -integrates information about the position of the body's parts and sends out signals that coordinate skeletal muscle movements
basal nuclei
A group of functionally related nuclei within the cerebrum, diencephalon and midbrain
The glossopharyngeal (IX) nerve carries impulses to/from the following regions.
Carotid arteries Salivary glands Tonsils Pharynx
Identify functions of the facial nerve.
Controls muscles of facial expression Controls the lacrimal gland Controls salivary glands Transmits taste sensation
Hypogossal nerve
Controls muscles of the tongue and throat
facial nerve
Controls muscles that promote facial expression, controls secretions of salivary glands and transmits sensory information from the tongue
What are the effectors for the motor fibers of the abducens nerve?
Extrinsic muscle of the eye
identify the cranial nerve that is a mixed nerve that primarily carries motor impulses to muscles of the pharynx and salivary glands?
Glossopharyngeal (IX)
Identify the cranial nerves that transmit parasympathetic information
III- oculomotor IX- glossopharyngeal VII- facial X-vagus
Indicate the three large branches of the trigeminal nerve.
Mandibular division Maxillary division Ophthalmic division
Where in the brain are basal nuclei located?
Midbrain, Diencephalon, cerebrum
Identify the functions of the oculomotor nerve
Regulates the shape of the eye Controls many of the muscles that move the eyeball
What is the source(s) of sensory information conveyed via the sensory fibers of the facial nerve?
Taste receptors of anterior tongue
Trigeminal nerve.
Transmits cutaneous sensory information from facial region, tongue and eye as well as controls muscles of mastication
Glossopharyngeal nerve
Transmits taste sensation and controls muscles involved in swallowing and secretions of salivary glands
Which cranial nerve functions to sense touch, pain, and temperature on the upper and lower face and to transmit motor impulses needed for chewing?
Trigeminal
Identify the cranial nerve that is a mixed nerve that carries somatic motor impulses to muscles associated with speech and swallowing, and autonomic fibers transmit impulses to viscera of the thorax and abdomen?
Vagus (X)
Where does the vagus (X) nerve carries impulses to/from?
Viscera of the thorax Viscera of the abdomen Muscles associated with swallowing Muscles associated with speech
The lateral rectus, an extrinsic muscle of the eye, is innervated by the
abducens nerve
The cranial nerve that is a primarily motor nerve with two branches: the spinal branch and the cranial branch is the ______ nerve
accessory
Subthalamic nuclei are associate with
basal nuclei and controlling motor functions
Nerves designated by Roman numerals and by names that indicate their primary functions and/or the general distribution of the their fibers are
cranial nerves
The vestibular branch of cranial nerve VIII carries sensory impulses for the sense of_________ and the cochlear branch carries sensory impulses for the sense of
equilibrium or balance Blank 2: hearing or sound
The cranial nerve that controls muscles of facial expression, secretion of salivary glands, secretion of lacrimal glands and transmits taste sensation is the
facial nerve
taste receptors of anterior tongue are the source of sensory information conveyed via the sensory fibers of the
facial nerve
The oculomotor (III) nerve carries motor impulses to muscles that ______
focus the lenses adjust the amount of light entering the eyes move the eyes raise the eyelids
The cerebral cortex is a thin layer
gray matter
The hypothalamus is the most ______ portion of the ______.
inferior, diencephalon
the blood vessels that supply blood to the brain
internal carotid arteries and vertebral arteries
The group of structures in the brain involved with emotions and memory is the __
limbic system
reticular formation
network of fibers within the brainstem is a network of nerve fibers and associated islands of gray matter which acts to filter incoming signals and to arouse the cerebral cortex. It is not a distinct structure, but is diffusely arranged within the brainstem
The cranial nerve that controls many of the muscles that move the eyeball, constricts the pupils and promotes lens accommodation is the _____ nerve.
oculomotor
Which primarily motor nerve carries impulses to muscles that raise the eyelids, move the eyes, adjust the amount of light entering the eyes and focus the lenses?
oculomotor
the part of the epithalamus
pineal gland Habenula
The optic nerve contains only_____ and transmits impulses associated with the sense of______
sensory nerve vision or sight
The grooves (depressions) between the raised areas on the surface of the cerebrum are called __
sulci
What is the largest portion of the brain and is approximately 1200g in females and 1400g in males?
the Cerebrum
the cranial nerve that is can be involved in reflexes necessary to maintain homeostasis.
vagus nerve
The cavities in the brain that store cerebrospinal fluid are the
ventricles
The three purely sensory cranial nerves are the olfactory, optic and
vestibulocochlear nerve
Parasympathetic function
The function involved in the regulation of smooth muscle, cardiac muscle and glands
The superior and inferior alveolar nerves arise from which cranial nerve and supply sensation to the upper and lower jaws and teeth?
Trigeminal
