BIOD 152 MODULE 2 PRACTICE QUESTIONS
AND DETAILED SOLUTIONS
◉ what is the choroid plexus formed by
Answer: formed from a network of blood vessels within the
ventricles
CSF circulates through the ventricles and into the meninges.
◉ what is the blood brain barrier
Answer: a diffusion barrier that prevents most particles from
entering the CNS tissue keeping the brain and spinal cord separate
from general blood circulation
◉ what forms the blood brain barrier and what protects it
Answer: formed by the relatively impermeable brain capillaries.
glial cells astrocytes wrap tightly around capillaries to prevent
harmful substances from harming neurons
◉ What is the largest portion of the brain?
Answer: cerebrum
comprising about 83% of total brain mass
,◉ what separates the left and right cerebral hemispheres
Answer: the median longitudinal fissure
◉ what are gyri?
Answer: raised ridges of tissue
◉ what are sulci
Answer: shallow grooves in the brain
◉ the ___ fissure separates the cerebrum from the cerebellum
Answer: transverse
◉ The cerebral hemisphere are connected by a bridge of white nerve
fibers called....
Answer: corpus callosum
◉ What is the corpus callosum?
Answer: white were fibers that connect the cerebral hemispheres
◉ What are the four lobes of the brain?
Answer: frontal, parietal, occipital, temporal
, ◉ what are the functions of the frontal lobe?
Answer: -controls higher level executive functions
-reasoning and decision making
-controls motor functions
- permits control over voluntary muscle actions
◉ what are the functions of the parietal lobe?
Answer: receives sensory information from receptors in the mouth
for taste and located in the skin such as those for touch, pressure,
and pain
◉ what are the functions of the occipital lobe?
Answer: interprets visual input
◉ what are the functions temporal lobe?
Answer: sensory areas for hearing and smelling
◉ what is a primary area of the cerebral cortex
Answer: primary areas in each lobe receive or send information for
one type of sensory or motor information
example primary motor cortex controls voluntary motor movements
for all parts of the body
AND DETAILED SOLUTIONS
◉ what is the choroid plexus formed by
Answer: formed from a network of blood vessels within the
ventricles
CSF circulates through the ventricles and into the meninges.
◉ what is the blood brain barrier
Answer: a diffusion barrier that prevents most particles from
entering the CNS tissue keeping the brain and spinal cord separate
from general blood circulation
◉ what forms the blood brain barrier and what protects it
Answer: formed by the relatively impermeable brain capillaries.
glial cells astrocytes wrap tightly around capillaries to prevent
harmful substances from harming neurons
◉ What is the largest portion of the brain?
Answer: cerebrum
comprising about 83% of total brain mass
,◉ what separates the left and right cerebral hemispheres
Answer: the median longitudinal fissure
◉ what are gyri?
Answer: raised ridges of tissue
◉ what are sulci
Answer: shallow grooves in the brain
◉ the ___ fissure separates the cerebrum from the cerebellum
Answer: transverse
◉ The cerebral hemisphere are connected by a bridge of white nerve
fibers called....
Answer: corpus callosum
◉ What is the corpus callosum?
Answer: white were fibers that connect the cerebral hemispheres
◉ What are the four lobes of the brain?
Answer: frontal, parietal, occipital, temporal
, ◉ what are the functions of the frontal lobe?
Answer: -controls higher level executive functions
-reasoning and decision making
-controls motor functions
- permits control over voluntary muscle actions
◉ what are the functions of the parietal lobe?
Answer: receives sensory information from receptors in the mouth
for taste and located in the skin such as those for touch, pressure,
and pain
◉ what are the functions of the occipital lobe?
Answer: interprets visual input
◉ what are the functions temporal lobe?
Answer: sensory areas for hearing and smelling
◉ what is a primary area of the cerebral cortex
Answer: primary areas in each lobe receive or send information for
one type of sensory or motor information
example primary motor cortex controls voluntary motor movements
for all parts of the body
