A&P I - Ex9: Brain & Cranial Nerves
Choroid plexus
Cerebrospinal fluid is formed by the: Choroid plexus Arachnoid villi Astrocytes Microglial Oligodendrocytes
Corpus callosum
Connects the two hemispheres of the cerebrum: Thalamus Pituitary Diencephalon Cerebellum Corpus callosum
Abducens (VI)
Cranial nerve abducts the eye. Only motor.
Oculomotor (III)
Cranial nerve allow you to move 4 of your 6 eye muscles as well as control iris diameter. Motor.
Glossopharyngeal (IX)
Cranial nerve allow you to swallow and throw up as well as taste different sensations. Motor and Sensory.
Optic (II)
Cranial nerve allows you to form sight. Sensory.
Facial (VII)
Cranial nerve allows you to from tears, make funny expressions, blink and taste the food that can be sweet and salty (popcorn and chocolate - yum!). Motor and Sensory
Hypoglossal (XII)
Cranial nerve allows you to roll your tongue. Only motor.
Vestibulocochlear (VIII)
Cranial nerve hearing and balance. sensory
Olfactory (I)
Cranial nerve helps you sense odors. Only sensory.
Accessory (XI)
Cranial nerve helps you shrug your shoulders and mover your head. Motor.
Vagus (X)
Cranial nerve involved in heart rate, digestion, taste and aortic blood pressure. Motor and Sensory
Trigeminal (V)
Cranial nerve supplies muscles for chewing and coveys sensations from eye, face sinuses and teeth. Motor and sensory.
Trochlear (IV)
Cranial nerve that moves the eye down and medial. Motor
Glossopharyngeal
Injury to this cranial nerve causes a loss of taste sensation, decreased salivation, and difficulty in swallowing. What nerve would be damaged? Vagus Glossopharyngeal Accessory Facial
VI
What is the Roman numeral for the Abducens nerve? IV V VII VI
XI
What is the Roman numeral for the Accessory nerve? X XI XII IX
VII
What is the Roman numeral for the Facial nerve? IV V VII VI
IX
What is the Roman numeral for the Glossopharyngeal nerve? XII VIII IX X
XII
What is the Roman numeral for the Hypoglossal nerve? XI X IX XII
III
What is the Roman numeral for the Oculomotor nerve? III I II IV
V
What is the Roman numeral for the Trigeminal nerve? V III VI IV
IV
What is the Roman numeral for the Trochlear nerve? VII V VI IV
X
What is the Roman numeral for the Vagus nerve? X XII IX XI
VIII
What is the Roman numeral for the Vestibulocochlear nerve? VI VI VIII IX
Medulla
regulation of heart, blood pressure, and respiration occurs by centers located here: Hypothalamus Medulla Midbrain Pons Thalamus
Glossopharyngeal (IX)
A cerebrovascular accident has made it difficult for a patient to swallow. Which cranial nerve was probably damaged? Facial (XII) Trigeminal (V) Glossopharyngeal (IX) Hypoglossal (XII)
aqueduct of midbrain
An infant has hydrocephalus. The CSF could not get out of the third ventricle. What passage was blocked? median aperture central canal aqueduct of midbrain lateral aperture interventricular foramen
VIII
Being dizzy after going on a Tilt-a-Whirl ride at the fair involves this cranial nerve.
Trigeminal (V)
Branches of this nerve are anesthetized before some dental procedures are performed. Trigeminal (V) Hypoglossal (XII) Olfactory (I) Glossopharyngeal (IX)
Inability to turn head or shrug shoulders
Damage to the accessory nerve would result in Inability to turn head or shrug shoulders Loss of normal speech function Hearing loss Changes in heart rate
abducens
Damage to this nerve could result in defects of eye movement: optic vagus trigeminal facial abducens
VIII
Hearing the crack of a bat hitting a baseball involves this cranial nerve.
Cerebellum
Helps control and coordinate movement and muscle tone: Corpus callosum Cerebellum Thalamus Midbrain Medulla Oblongata
Cerebellum
Helps maintain equilibrium: Cerebellum Pons Hypothalamus Thalamus Tectum
VIII
Identify the Roman numeral of the cranial nerve with the action of equilibrium and hearing. II VII VIII I
I
Identify the Roman numeral of the cranial nerve with the action of smell. VIII II I VII
XII
Identify the Roman numeral of the cranial nerve with the action of speech and swallowing, tongue muscles.
IX
Identify the Roman numeral of the cranial nerve with the action of taste on posterior 1/3 of tongue, swallowing, speech, secretion of saliva.
VII
Identify the Roman numeral of the cranial nerve with the action of taste, facial expression, tears and salivation.
X
Identify the Roman numeral of the cranial nerve with the action of taste, pharynx and epiglottis sensations, swallowing, coughing, voice production, smooth muscle of GI tract, secretion of digestive glands, and slows heart rate.
II
Identify the Roman numeral of the cranial nerve with the action of vision.
cerebellum
Identify the brain structure shown in this image. cerebellum spinal nerve C1 medulla oblongata spinal cord
brain stem
Identify the brain structure shown in this image. cerebrum diencephalon brain stem cerebellum
cerebrum
Identify the brain structure shown in this image. diencephalon cerebrum cerebellum brain stem
midbrain
Identify the brain structure shown in this image. midbrain medulla oblongata spinal cord pons
medulla oblongata
Identify the brain structure shown in this image. midbrain pons spinal cord medulla oblongata
spinal cord
Identify the brain structure shown in this image. midbrain spinal cord pons medulla oblongata
pituitary gland
Identify the brain structure shown in this image. olfactory tract pituitary gland olfactory bulb cerebrum
cerebral peduncle
Identify the brain structure shown in this image. optic tract pons olfactory tract cerebral peduncle
pons
Identify the brain structure shown in this image. optic tract pons olfactory tract midbrain
olfactory tract
Identify the brain structure shown in this image. pituitary gland cerebrum olfactory bulb olfactory tract
pons
Identify the brain structure shown in this image. spinal cord medulla oblongata pons midbrain
Corpus callosum
Identify the structure shown in this image. Epithalamus Corpus callosum Midbrain Hypothalamus
Lateral ventricle
Identify the structure shown in this image. Pons Fourth ventricle Third ventricle Lateral ventricle
glossopharyngeal
If you have a perpetual dry mouth; this cranial nerve may not be functioning correctly. vagus accessory hypoglossal glossopharyngeal
Vagus
If you have increased acid production in your stomach, which cranial nerve may doctors sever to decrease acid? Hypoglossal Vagus Glossopharyngeal Accessory
XI
Lifting your shoulders while doing warm-up exercises involves this cranial nerve.
Accessory (XI)
Nerve that has both cranial and spinal roots; motor portion sends signals allowing you to turn your head or shrug your shoulders. Hypoglossal (XII) Accessory (XI) Trigeminal (V) Facial (XII)
Hypoglossal (XII)
Primarily motor nerve, important in speech and swallowing. Olfactory (I) Hypoglossal (XII) Trigeminal (V) Glossopharyngeal (IX)
Tectum (corpora quadrigemina)
Reflexes associated with vision and hearing: Pons Limbic system Tectum (corpora quadrigemina) Corpus callosum Medulla oblongata
Thalamus
Relay center for afferent sensory signals: Corpus callosum Epithalamus Hypothalamus Thalamus Cerebellum
Limbic system
Seat of emotions: Limbic system Medulla oblongata Pons Corpus callosum Tectum (corpora quadrigemina)
Falx cerebelli
Separates cerebellar hemispheres
Tentorium cerebella
Separates cerebrum and cerebellum
Falx cerebri
Separates the cerebral hemispheres
I
Smelling dinner cooking involves this cranial nerve.
FALSE
T/F? All cranial nerves are mixed nerves.
TRUE
T/F? CSF flows from the third ventricle into the fourth ventricle through the cerebral aqueduct.
TRUE
T/F? Rolling your eyes involves Cranial Nerves III, VI, and IV.
FALSE
T/F? Superior colliculi are involved with head movements in response to auditory stimuli.
TRUE
T/F? The Abducens nerve is motor primarily.
TRUE
T/F? The Facial nerve is both sensory and motor.
TRUE
T/F? The Oculomotor nerve is motor primarily.
FALSE
T/F? The Optic nerve is primarily motor.
TRUE
T/F? The Roman numeral for the Olfactory nerve is I.
FALSE
T/F? The Roman numeral for the Optic nerve is III.
TRUE
T/F? The Vestibulocochlear nerve's primary function is sensory only.
FALSE
T/F? The cerebellar cortex is involved with memory and analyzing sensory data.
TRUE
T/F? The corpora quadrigemina coordinate visual and auditory reflexes.
TRUE
T/F? The ependymal cells line the ventricles and have cilia that move the CSF.
TRUE
T/F? The hypothalamus controls and integrates the autonomic nervous system and regulates hormones, emotional behavior, body temperature, eating, and drinking behavior.
FALSE
T/F? The medulla smoothes and coordinates skilled skeletal muscle movement. It also is involved in posture and balance or equilibrium.
TRUE
T/F? The pineal gland secretes melatonin that controls the sleep-wake cycle.
FALSE
T/F? The pons contains vital centers that regulate heartbeat, breathing, blood pressure, vomiting, and coughing.
TRUE
T/F? The septum pellucidum is a thin membrane that separates the two lateral ventricles.
TRUE
T/F? The thalamus relays all sensory input to the cerebral cortex and is involved in skeletal muscle actions and memory processing.
TRUE
T/F? The white fiber tracts communicating between hemispheres are referred to as the corpus callosum.
motor primarily
The Accessory nerve is: sensory only motor primarily both sensory and motor
both sensory and motor
The Glossopharyngeal nerve is: motor primarily both sensory and motor sensory only
motor primarily
The Hypoglossal nerve is: sensory only both sensory and motor motor primarily
both sensory and motor
The Trigeminal nerve is: motor primarily both sensory and motor sensory only
motor primarily
The Trochlear nerve is: both sensory and motor sensory only motor primarily
both sensory and motor
The Vagus nerve is: sensory only both sensory and motor motor primarily
Ependymal
The blood-CSF barrier is formed by what type of cell? Astrocytes Microglial Oligodendrocytes Ependymal
A. lets lipid-soluble substances, such as O2, CO2 and many anesthetic agents enter the brain.
The blood-brain barrier A. lets lipid-soluble substances, such as O2, CO2 and many anesthetic agents enter the brain. B. is formed by oligodendrocytes. C. allows creatinine, urea and most ions to pass more quickly than water and glucose. D. is impermeable to glucose
loss of vision
The effect of a blow to the back of the head damaging the area shown in the image may result in: cessation of breathing loss of use of left arm loss of vision loss of equilibrium
loss of use of left arm
The effect of a stroke damaging the area shown in the image may result in: cessation of breathing loss of vision loss of use of left arm loss of pain localization in the shoulder
auditory stimuli, for example, when you turn toward a loud bang.
The inferior colliculi of the Tectum help you respond to: visual stimuli, for example, when you turn toward a bright flash of light. auditory stimuli, for example, when you turn toward a loud bang. somatic stimuli, for example, when you swat at a bug that has landed on your arm.
Corpus callosum
The major pathway of communication between the right and left hemisphere is the: Corpus callosum Longitudinal fissure Hypothalamus Vermis
Cerebral cortex, gray
The outer layer of the cerebrum is the ______. It is composed of ______ matter so it mainly contains cell bodies. Cerebral tracts, white Cerebral tracts, gray Cerebral cortex, white Cerebral cortex, gray
parietal lobe.
The primary gustatory area of the cerebrum is in the: parietal lobe. frontal lobe. temporal lobe. occipital lobe. midbrain.
limbic system
The system that is involved with emotions: cerebellum limbic system hypothalamus thalamus pons
Optic
This cranial nerve runs through the optic foramen Olfactory Optic Oculomotor Trochlear
Choroid plexus
What is the name of the special tiny capillaries located in the walls of the ventricles, where fluid for the CSF is derived from the bloodstream? Choroid plexus Third ventricle Lateral ventricles Fourth ventricle
Choroid plexus
What is the name of the special tiny capillaries located in the walls of the ventricles, where fluid for the CSF is derived from the bloodstream? Fourth ventricle Third ventricle Lateral ventricles Choroid plexus
Choroid plexus
What is the network of capillaries that produce cerebrospinal fluid and are found in the walls of the ventricles of the brain? Circle of Willis Choroid plexus Ependymal Cells Cerebral peduncle
Subarachnoid
When the CSF leaves the ventricles, it moves into what space around the brain, where it circulates all around the cerebrum and cerebellum? Epidural Subdural Both Subdural and Epidural are correct Subarachnoid
Lateral ventricles
Which are the superior most ventricles where CSF is formed? Fourth ventricle Lateral ventricles Both Third and Fourth ventricles are correct Third ventricle
Lateral ventricles
Which are the superior most ventricles where CSF is formed? Lateral ventricles Fourth ventricle Both Third and Fourth ventricles are correct Third ventricle
Pons
Which brain structure helps control breathing and conducts impulses to and from the cerebellum, midbrain, and medulla? Hypothalamus Pons Brain stem Thalamus
Inferior colliculus
Which brain structure is responsible for the "startle reflex" in response to loud sounds? Pons Superior colliculi Inferior colliculus Pneumotaxic Apneustic
Olfactory (I)
Which cranial nerve is sensory and conducts the nerve impulses for the sense of smell? Olfactory (I) Trigeminal (V) Hypoglossal (XII) Glossopharyngeal (IX)
Optic; oculomotor
Which cranial nerve senses light and which cranial nerve controls the iris contraction/dilation? Optic; oculomotor Oculomotor; optic Trochlear; abducens Oculomotor; abducens
Diencephalon
Which of the following brain structures consists of the thalamus, hypothalamus and epithalamus? Dura mater Cerebellum Diencephalon Brain stem Cerebrum
Diencephalon
Which region of the brain contains the pineal gland? Midbrain Diencephalon Cerebrum Brainstem
Pons
Which region of the brain contains the pontine respiratory group and apneustic areas that help control respiration? Epithalamus Medulla Oblongata Pons Superior colliculi
Corpus callosum
White matter tracts linking left and right cerebral hemispheres: Pons Corpus callosum Medulla oblongata Tectum (corpora quadrigemina) Limbic system
trigeminal nerve
You are at the dentist to receive a root canal. The dentist gives you a shot of Novocain. Which cranial nerve will be mostly affected? abducens nerve accessory nerve hypoglossal nerve trigeminal nerve vestibulocochlear nerve
Hypothalamus
feelings of hunger, fullness and thirst stimulate centers here so that you can respond accordingly: Hypothalamus Medulla Midbrain Pons Thalamus
Hypothalamus
principle regulator of visceral activities because it acts as a liaison between the cerebral cortex and autonomic nerves: Hypothalamus Medulla Midbrain Pons Thalamus
