brain/cranial nerves - practice Qs Flashcards
the brain
a. is the center of both motor and sensory processing
b.is the center of emotion, intellect, memory, and behavior
c. is composed of trillions of neurons and thousands of neuroglia
d. a and b are correct
e. a, b and c are correct
D
each of the following is considered a major part of the brain except:
a. brain stem
b. cerebellum
c. cerebrum
d. diencephalon
e. hypothalamus
e
which part of the embryonic brain ultimately becomes the cerebrum and lateral ventricles
a.telencephalon
b.mesencephlon
c.diencephalon
d.rhombencephalon
e.metencephalon
a
how do the cranial meninges differ from the spinal meninges
a. the cranial meninges have one layer instead of two
b. there is no epidural space between the dura and the bones of the skull
c. the cranial meninges do not enclose vascular sinuses, but the spinal meninges do
d. a and b are correct
e. a, b, and c are correct
b
which blood vessels supply the brain with blood
a. vertebral arteries
b. internal carotid arteries
c. external carotid arteries
d. a and b are correct
e. a, b, and c are correct
d
which is true of the adult brain
a. it uses about 2% of the body’s O2 at rest
b. it is dependent on fatty acid metabolism for energy
c. its functions are impaired by even transient interruptions of blood flow
d. it represents about 20% of the body’s mass
c
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. a and b are correct
e. a, b and c are correct
a
cerebrospinal fluid
a. is an opaque, yellowish fluid
b. provides some mechanical protection for the brain
c. contains red blood cells
d. is found in the blood vessels of the CNS
e. is made by microglia
b
the brain stem includes all of the following except the
a. medulla oblongata
b. pons
c. midbrain
d. diencephalon
e. reticular formation
d
the cerebrum
a. is located posterior to the brain stem and inferior to the cerebrum
b. initiates voluntary skeletal muscle contractions
c. communicates with the cerebrum through three pairs of cerebellar peduncles
d. has a superficial layer of white matter
e. all of the above
a
the hypothalamus
a. initiates voluntary movements
b. produces the hormone melatonin
c. controls and integrates autonomic nervous activity
d. is regulated by the pituitary gland
e. plays a major role in the maintenance of homeostasis
c
the hypothalamus
a. communicates with the anterior pituitary gland via axons
b. regulates appetite and thirst
c. cannot detect glucose levels
d. communicates with the posterior pituitary gland via release of hormones
e. cannot process olfactory or visual
b
the cerebrum
a. is the thinking part of the brain
b. is the smallest part of the brain
c. is characterized by a grey matter core surrounded by a thin white matter cortex
d. is characterized into five hemispheres and two lobes
e. is characterized by raised
a
the thalamus does all of the following except:
a. serves as a major sensory relay station
b. contributes to motor functions
c. relays information from one area of the cerebral cortex to another
d. gives precise location information for sensations of pain and touch
e. helps regulate autonomic activities
D
how does cerebrospinal fluid pass from the 3rd ventricle into the 4th ventricle
a. through the interventricular foramen
b. through the median aperture
c. through the cerebral aqueduct
d. through the median aperture
e. through the central canal
C