Deck 17: Gross Anatomy of the Brain and Cranial Nerves

Question 1

Decussation of pyramids refers to crossover of major motor tracts in the region of the brain.

A) medulla oblongata
B) pons
C) thalamus
D) mid brain

Answer 1

A

Question 2

The two lateral ventricles in the cerebral hemispheres are separated by the .

A) septum pellucidum
B) mammillary body
C) corpus callosum
D) fornix

Answer 2

A

Question 3

In which lobe of the brain is the primary visual cortex located?

A) frontal
B) parietal
C) temporal
D) occipital

Answer 3

D

Question 4

This part of the brain stem is continuous with the spinal cord.

A) cerebral peduncles
B) medulla oblongata
C) midbrain
D) thalamus

Question 5

The brain and spinal cord make up this division of the nervous system.

A) autonomic nervous system (ANS)
B) somatic division of the peripheral nervous system
C) peripheral nervous system (PNS)
D) central nervous system (CNS)

Question 6

The sensory portion of the PNS carries electrical signals the CNS; the motor portion carries electrical signals the CNS.

A) away from, toward
B) toward, also toward
C) toward, away from
D) away from, also away from

Question 7

The cerebrum develops from the whereas the cerebellum develops from the _.

A) forebrain, midbrain
B) forebrain, hindbrain
C) midbrain, hindbrain

Question 8

The thalamus and the hypothalamus are structures found in the .

A) cerebral hemispheres
B) brain stem
C) diencephalon
D) cerebellum

Question 9

The basal nuclei (basal ganglia) .

A) are located in the diencephalon
B) control heart rate, respiration, blood pressure, and other autonomic functions
C) are involved in regulating voluntary motor activities
D) are located in the diencephalon, are involved in regulating voluntary motor activities, and control heart rate, respiration, blood pressure, and other autonomic functions

Question 10

White matter of the CNS consists of .

A) neuron cell bodies
B) meninges
C) ventricles
D) fiber tracts

Question 11

Which of the cranial nerves below is purely sensory?

A) trochlear
B) olfactory
C) glossopharyngeal
D) accessory

Question 12

What is cerebral cortex?

A) the inner grey matter of the cerebrum
B) the outermost grey matter covering the cerebrum
C) the outermost surface of white matter covering the cerebrum
D) deep white matter of the cerebrum

Question 13

The central sulcus of each cerebral hemisphere separates the _.

A) frontal and parietal lobes
B) parietal and occipital lobes
C) parietal and temporal lobes
D) temporal and occipital lobes

Question 14

Many motor functions as well as primary motor cortex are located in this lobe of the brain.

A) frontal
B) parietal
C) temporal
D) occipital

Question 15

The precentral gyrus _.

A) is a major motor area of the brain
B) is a center for audition
C) is the cortical area to which taste sensations come
D) is important for somatosensation

Question 16

This part of the peripheral nervous system controls smooth muscle, cardiac muscle, and glands.

A) somatic division
B) sensory division
C) spinal cord
D) autonomic nervous system

Question 17

This part of the brain stem consists primarily of fiber tracts. It resembles a bridge.

A) midbrain
B) medulla oblongata
C) corpus callosum
D) pons

Question 18

Primary somatosensory cortex as well as many other sensory functions are located in this lobe of the brain.

A) frontal
B) parietal
C) temporal
D) occipital

Question 19

The surface of the cerebral hemispheres consists of ridges and grooves. The shallow grooves are called .

A) fissures
B) sulci
C) gyri

Question 20

The corpus callosum _.

A) is an important cerebral hemisphere nucleus
B) consists of fibers that connect the cerebral hemispheres
C) passes between the diencephalon and basal ganglia
D) separates the lateral ventricles of the cerebral hemispheres

Question 21

The falx cerebri and tentorium cerebelli are formed by this connective tissue membrane.

A) dura mater
B) pia mater
C) arachnoid

Question 22

Arbor vitae refers to the .

A) white matter in the cerebrum
B) gray matter in the cerebrum
C) gray matter in the cerebellum
D) white matter in the cerebellum

Question 23

The olfactory bulbs of the sheep .

A) are relatively larger than those in humans
B) are less important as a food-getting sense than those in humans
C) carry visual information
D) are located more superiorly than those in humans

Question 24

This purely sensory cranial nerve carries signals associated with vision.

A) trigeminal
B) oculomotor
C) optic
D) facial

Question 25

This cranial nerve operates the muscles of the tongue.

A) hypoglossal
B) glossopharyngeal
C) facial
D) vagus

Question 26

As compared to coma, a patient in a permanent vegetative state .

A) loses brain stem functions
B) loses thalamic function
C) has loss of consciousness for less than 4 months
D) lacks both awareness and wakefulness

Question 27

What is true about cranial nerves III, IV, and VI?

A) They are the major sensory nerves of the face.
B) They carry the sensation of taste.
C) They control structures in the thorax and abdomen.
D) They move the eyeball.

Question 28

Cerebrospinal fluid formed in the lateral ventricles travels through the _ to reach the third ventricle.

A) median aperture
B) interventricular foramen
C) central canal
D) cerebral aqueduct

Question 29

Coordination of skeletal muscle activity is one of the functions of the cerebellum. Another is .

A) processing sensory information from the integument
B) conscious control of skeletal muscle
C) relaying visual information to the primary visual cortex
D) control of balance and equilibrium

Question 30

This diencephalic structure is involved in many functions including temperature regulation, water balance, and fat and carbohydrate metabolism.

A) mammillary bodies
B) thalamus
C) hypothalamus
D) pineal gland

Question 31

In comparing sheep brains and human brains, one notes that, in humans, .

A) there is only a single mammillary body; sheep have two
B) the superior and inferior colliculi are relatively larger
C) the fornix is thinner than the corpus callosum
D) the pons is relatively smaller

Question 32

What is the function of the corpora quadrigemina?

A) They are important for the sense of taste.
B) They are important for maintaining balance.
C) They are reflex centers for visual and auditory stimuli.
D) They are olfactory relay centers.