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A&PCh17

Brain & Cranial Nerves

QuestionAnswer
List the four major parts of the brain? Cerebrum, Cerebellum, Brain stem, and diencephalon
The adult brain represents only ____ of the total body weight. 0.02
Cerebrospinal fluid carries chemicals transferred from the ______ to neurons in the CNS. Blood
What is the name of the large cavity located in each hemisphere of the cerebrum? Lateral ventricle
This is a narrow tube that connects the third and fourth ventricles: Aqueduct of the midbrain
Where is the cardiovascular center in the brainstem? In the medulla
This is a netlike region of white and gray matter that extends through the brain, maintaining consciousness. Reticular formation
Nuclei in this structure relay sensory information to the cerebral cortex. Thalamus
This structure regulates eating and drinking behavior. Hypothalamus
Gyri in the cerebrum are formed because: The gray matter grows faster than the white matter
The nuclei deep within the cerebrum that help initiate and terminate movements are called the: Basal ganglia
Where is the primary somatosensory area located? Parietal lobe
Which of the following areas of the cerebrum is responsible for conscious movements the body. Precentral gyrus
Where is the visual area located? Occipital lobe
Which of the following is an extension of the dura mater and separates parts of the brain? Falx cerebelli
How much of the body's oxygen supply does the brain require? 20%
This structure protects the brain by preventing the passage of harmful substances and pathogens from the bloodstream into the nervous tissue. Blood brain barrier
Cerebrospinal fluid is produced in a tissue called: Choroid plexus
These are fingerlike projections that reabsorb CSF into the bloodstream. Arachnoid villi
This part of the brain is composed of the medulla oblongata, pons and midbrain. Brain stem
Where is the center in the brainstem for adjusting the basic rhythm of breathing? In the medulla
This consists of the thalamus, hypothalamus and epithalamus. Diencephalon
This structure has nuclei that control the ANS. Hypothalamus
This structure controls the output of many hormones from the pituitary gland. Hypothalamus
The hypothalamus produces hormones that directly control which of the following glands? Pituitary
This structure produces the hormone melatonin. Pineal gland
The structure that connects the left and right cerebral hemispheres. Corpus callosum
Where is the primary motor area located? Frontal lobe
Where is the Broca's speech area located? Frontal lobe
Which of the following functional areas of the cerebrum is responsible for speech? Broca's area
How many pairs of cranial nerves are there? 12
Which of the following cranial nerves carries sensory information to the olfactory area? Cranial Nerve I
Which cranial nerves move the eyeball? Cranial Nerve III, IV and VI
Cranial nerve V is also known by which name? Trigeminal
Which cranial nerve is responsible for regulating visceral activity? Vagus
Which cranial nerve is responsible for facial expression? Facial
This structure controls body temperature. Hypothalamus
Where is the pineal gland found? Epithalamus
This structure helps to smooth and coordinate complex skeletal muscle movements. Cerebellum