CH 14
Medullary nuclei are
1 only
The medial lemniscus is a band of white matter that extends through
1, 2 & 3
The adult brain represents only ____ of the total body weight.
2%
Which of the following describes a function of cerebrospinal fluid?
All of these choices
Which of the following nuclei are found in the pons?
All of these choices
A common type of disabling senile dementia that affects about 11% of the population over 65 and results in loss of reasoning and ability to care for oneself, is called
Alzheimer disease
The motor axons of the accessory nerve originate in:
Anterior gray horn of first 5 segments of the cervical region of the spinal cord
Which of the following glands is directly controlled by hormones produced by the hypothalamus?
Anterior pituitary gland
Cerebrospinal fluid is reabsorbed through these fingerlike projections found in the dural venous sinuses.
Arachnoid villi
Which of the following types of tracts are used to conduct nerve impulses between gyri within the same cerebral hemisphere?
Association tracts
This type of brain wave occurs at regular intervals when a person is awake but not when a person is sleeping.
Beta waves
This protects the brain by preventing the movement of harmful substances and pathogens from the blood into the brain tissue.
Blood brain barrier
Which of the following are NOT controlled by the hypothalamus?
Blood calcium concentration
Which of the following brain structures consists of the medulla oblongata, pons and midbrain?
Brain stem
Which of the following functional areas of the cerebrum is responsible for speech?
Broca's area
Which of the following is NOT a major region of the brain?
Cauda equina
These are networks of capillaries found in the walls of the ventricles of the brain that produce cerebrospinal fluid
Choroid plexuses
Which of the following structures conducts nerve impulses between the two different hemispheres of the cerebrum?
Corpus callosum
Which of the following meninges has two layers?
Cranial dura mater
Which of the following brain structures consists of the thalamus, hypothalamus and epithalamus?
Diencephalon
Which of the following regions of the brain contain the pineal gland?
Epithalalmus
Which of the following cranial nerves is primarily responsible for changing facial expressions?
Facial
The vestibular branch of the vestibulocochlear nerve functions in hearing while the cochlear branch is involved in equilibrium.
False
This extension of the dura mater separates the two hemispheres of the cerebrum.
Falx cerebri
This portion of the cerebellum contributes to equilibrium and balance.
Flocculonodular lobe
Which of the following is a nucleus found in the medulla oblongata that receives sensory information associated with touch, pressure and vibration?
Gracile nucleus
Which of the following cranial nerves control movements of the eyeball?
III, IV and VI
Which is NOT a purely motor nerve?
IX
This structure carries sensory information coming from proprioceptors found in the trunk and limbs into the cerebellum.
Inferior cerebellar peduncle
This structure in the brain contains centers responsible for the "startle reflex" in response to loud sounds.
Inferior colliculus
Which of the following is a fluid-filled cavity located in each hemisphere of the cerebrum?
Lateral ventricle
In what portion of the brain does the hypoglossal nucleus originate?
Medulla oblongata
Which of the following regions of the brain contains the inferior olivary nucleus?
Medulla oblongata
This brain vesicle gives rise to the midbrain and cerebral aqueduct.
Mesencephalon
This region of the brain contains pneumotaxic and apneustic areas that help control respiration.
Pons
Which of the following functional areas of the cerebrum is responsible for conscious movements of the body?
Primary motor area
Which of the following functional areas of the cerebrum is responsible for sensing body touch and temperature?
Primary somatosensory area
Which of the following functional areas of the cerebrum is responsible for vision?
Primary visual area
Which of the following is NOT a nucleus found in the thalamus?
Red nucleus
This is a netlike region of white and gray matter that extends throughout the brainstem and functions to help maintain consciousness.
Reticular formation
Which of the following is a nucleus found in the midbrain that releases dopamine?
Substantia nigra
This region of the brain serves as the major relay station for most sensory impulses that reach the primary sensory areas of the cerebral cortex from the spinal cord and brain stem.
Thalamus
This is a narrow fluid-filled cavity found along the midline superior to the hypothalamus and between the right and left halves of the thalamus.
Third ventricle
Which of the following statements best describes the structure of the blood-brain barrier that provides its functional characteristics?
Tight junctions tightly seal endothelial cells of capillaries in the brain.
Which of the following cranial nerves is responsible for regulating visceral activity?
Vagus
These three areas of gray matter found in each cerebral hemisphere are important in helping to control the initiation and termination of skeletal muscle movements.
basal nuclei
Brain waves that generally appear during periods of sensory input and mental activity are called
beta waves
Cerebrospinal fluid carries small amounts of chemicals like glucose from the ______ to neurons and neuroglia.
blood
Together the lentiform and caudate nuclei are known as the
corpus striatum
Which of the following cranial nerves carries sensory information coming from the nasal cavity to the olfactory area of the cerebrum?
cranial nerve I
Brain waves that appear during deep sleep are called
delta waves
This portion of the limbic system lies between the hippocampus and the parahippocampus gyrus.
dentate gyrus
The brain and spinal cord develop from the ______ neural tube.
ectodermal
The central sulcus of the cerebrum separates the
frontal lobe from the parietal lobe
Hand preference when writing or throwing is an example of
hemispheric lateralization
Patients with damage in the left hemisphere often exhibit aphasia (inability to use or comprehend words). This is an example of
hemispheric lateralization
Damage to this portion of the limbic system results in loss of memory of recent events and difficulty committing anything new to memory.
hippocampus
This lobe of the cerebrum is found deep to the other four lobes and thus cannot be observed from the surface.
insula
Blood flows to the brain through the ________ arteries and away from the brain through the _______ vein.
internal carotid and vertebral; internal jugular
A deep indentation found along the medial plane that separates the right and left cerebral hemispheres is called the
longitudinal fissure
An electroencephalogram (EEG) measures brain waves primarily generated by
neurons in the cerebral cortex
The postganglionic cell bodies of autonomic motor neurons are located in the:
otic ganglion
The cerebellar cortex consists of folia, which are
parallel folds of gray matter.
During brain development, the gyri of the cerebrum are formed because
the gray matter grows faster than the underlying white matter.
Brain waves that appear in adults and children during periods of emotional stress are called
theta waves
Cranial nerve V is also known as the _______________ nerve.
trigeminal
Pyramids are
white matter protrusions found on the medulla oblongata.