Portage Learning Anatomy and Physiology II Module 2
Examination (A&P II M2) Exam Questions and Answers
List the 4 parts of the human brain - ANSWER>>cerebral hemispheres,
diencephalon, brain stem, cerebellum
Describe the number, location and function of the brain ventricles -
ANSWER>>There are 4 ventricles in the interior of the brain, chambers filled with
cerebrospinal fluid which is produced there
Label the ventricles - ANSWER>>
Describe the brain meninges and the layers - ANSWER>>The meninges are the 3
layers of connective tissue membranes that cover and protect central nervous
system organs and enclose cerebrospinal fluid
The leathery dura mater is the double-layered outer meninx (1)
The middle arachnoid meninx is a loose layer separated from the dura mater by
the subdural space (2)
Beneath the arachnoid meninx is the subarachnoid space which contains blood
vessels and is filled with cerebrospinal fluid
The inner pia matter meninx is a thin connective tissue tightly attached to the
brain (3)
What is the function of the choroid plexus? - ANSWER>>The choroid plexus
produces cerebrospinal fluid (CSF)
, What is the blood-brain barrier and how is it maintained? - ANSWER>>The blood-
brain barrier is a diffusion barrier which prevents most particles from entering the
CNS tissue, keeping the brain and spinal cord separate from general blood
circulation.
The blood-brain barrier is formed by the relatively impermeable brain capillaries,
due to the glial cells astrocytes.
Maintenance of the blood-brain barrier is important to provide a stable chemical
environment for the nervous system. A stable internal environment is important
to protect neurons from chemical variations which could cause uncontrollable
firing of neurons
Describe the cerebrum - ANSWER>>The cerebrum, the foremost part of the brain,
is the largest part of the brain in humans comprising about 83% of total brain
mass
What is the median longitudinal fissure? - ANSWER>>It separates the left and
right cerebral hemispheres from one another
Raised ridges on the cerebrum are called _________ - ANSWER>>gyri
The ___________ separates the cerebrum from the cerebellum. - ANSWER>>the
transverse fissure
The outer portion of the cerebral hemispheres is called the ________ and is highly
convoluted and gray in color - ANSWER>>cerebral cortex
Describe the functions of the lobes of the cerebrum - ANSWER>>The frontal lobe
controls high level executive functions, such as reasoning and decision making.
The frontal lobe also controls motor functions and permits control over voluntary
muscle actions
Examination (A&P II M2) Exam Questions and Answers
List the 4 parts of the human brain - ANSWER>>cerebral hemispheres,
diencephalon, brain stem, cerebellum
Describe the number, location and function of the brain ventricles -
ANSWER>>There are 4 ventricles in the interior of the brain, chambers filled with
cerebrospinal fluid which is produced there
Label the ventricles - ANSWER>>
Describe the brain meninges and the layers - ANSWER>>The meninges are the 3
layers of connective tissue membranes that cover and protect central nervous
system organs and enclose cerebrospinal fluid
The leathery dura mater is the double-layered outer meninx (1)
The middle arachnoid meninx is a loose layer separated from the dura mater by
the subdural space (2)
Beneath the arachnoid meninx is the subarachnoid space which contains blood
vessels and is filled with cerebrospinal fluid
The inner pia matter meninx is a thin connective tissue tightly attached to the
brain (3)
What is the function of the choroid plexus? - ANSWER>>The choroid plexus
produces cerebrospinal fluid (CSF)
, What is the blood-brain barrier and how is it maintained? - ANSWER>>The blood-
brain barrier is a diffusion barrier which prevents most particles from entering the
CNS tissue, keeping the brain and spinal cord separate from general blood
circulation.
The blood-brain barrier is formed by the relatively impermeable brain capillaries,
due to the glial cells astrocytes.
Maintenance of the blood-brain barrier is important to provide a stable chemical
environment for the nervous system. A stable internal environment is important
to protect neurons from chemical variations which could cause uncontrollable
firing of neurons
Describe the cerebrum - ANSWER>>The cerebrum, the foremost part of the brain,
is the largest part of the brain in humans comprising about 83% of total brain
mass
What is the median longitudinal fissure? - ANSWER>>It separates the left and
right cerebral hemispheres from one another
Raised ridges on the cerebrum are called _________ - ANSWER>>gyri
The ___________ separates the cerebrum from the cerebellum. - ANSWER>>the
transverse fissure
The outer portion of the cerebral hemispheres is called the ________ and is highly
convoluted and gray in color - ANSWER>>cerebral cortex
Describe the functions of the lobes of the cerebrum - ANSWER>>The frontal lobe
controls high level executive functions, such as reasoning and decision making.
The frontal lobe also controls motor functions and permits control over voluntary
muscle actions
