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.