,BIOD 152 Module 2 | Practice Q&A | 2026/2027 | Anatomy | Portage
Learning
1. This is the most superficial layer of the meninges.
A) Dura mater
B) Arachnoid mater
C) Pia mater
D) Subarachnoid space
Correct Answer: Dura mater
Rationale: The dura mater is the outermost, toughest layer of the meninges.
The arachnoid mater is the middle layer, and the pia mater is the innermost
layer tightly attached to the brain.
2. This layer of the meninges is tightly attached to the brain.
A) Dura mater
B) Arachnoid mater
C) Pia mater
D) Subdural space
Correct Answer: Pia mater
Rationale: The pia mater is the innermost meninx, a thin connective tissue
layer tightly adhered to the brain surface. The dura mater is outermost, and
the arachnoid mater is the middle layer.
3. The _____ fissure separates the right and left cerebral hemispheres.
A) Transverse
,B) Central
C) Longitudinal
D) Lateral
Correct Answer: Longitudinal
Rationale: The longitudinal fissure separates the cerebral hemispheres. The
transverse fissure separates the cerebrum from the cerebellum. Sulci and
gyri are surface features of the brain.
4. The _____ fissure separates the cerebrum from the cerebellum.
A) Longitudinal
B) Transverse
C) Central
D) Lateral
Correct Answer: Transverse
Rationale: The transverse fissure separates the cerebrum from the
cerebellum. The longitudinal fissure separates the two cerebral hemispheres.
This distinction is commonly tested on the Module 2 exam.
5. Describe the function of the brain ventricles.
A) They store neurotransmitters for synaptic transmission
B) They are chambers filled with cerebrospinal fluid that circulate and protect
the brain
C) They produce hormones for the endocrine system
D) They connect the brain to the spinal cord
, Correct Answer: They are chambers filled with cerebrospinal fluid that
circulate and protect the brain
Rationale: There are four ventricles in the interior of the brain, chambers
filled with cerebrospinal fluid which is produced there. Once formed, the CSF
circulates through the ventricles and into the subarachnoid space, bathing
and floating the brain.
6. What is the purpose of the blood-brain barrier?
A) To allow all particles to enter the CNS tissue
B) To provide a stable chemical environment for the nervous system
C) To increase blood flow to the brain
D) To produce cerebrospinal fluid
Correct Answer: To provide a stable chemical environment for the nervous
system
Rationale: The blood-brain barrier is a diffusion barrier which prevents most
particles from entering the central nervous system tissue, separating the
brain and spinal cord from general blood circulation. This maintains a stable
chemical environment for nervous system function.
7. The blood-brain barrier is formed by which glial cells?
A) Microglia
B) Ependymal cells
C) Astrocytes
D) Oligodendrocytes
Learning
1. This is the most superficial layer of the meninges.
A) Dura mater
B) Arachnoid mater
C) Pia mater
D) Subarachnoid space
Correct Answer: Dura mater
Rationale: The dura mater is the outermost, toughest layer of the meninges.
The arachnoid mater is the middle layer, and the pia mater is the innermost
layer tightly attached to the brain.
2. This layer of the meninges is tightly attached to the brain.
A) Dura mater
B) Arachnoid mater
C) Pia mater
D) Subdural space
Correct Answer: Pia mater
Rationale: The pia mater is the innermost meninx, a thin connective tissue
layer tightly adhered to the brain surface. The dura mater is outermost, and
the arachnoid mater is the middle layer.
3. The _____ fissure separates the right and left cerebral hemispheres.
A) Transverse
,B) Central
C) Longitudinal
D) Lateral
Correct Answer: Longitudinal
Rationale: The longitudinal fissure separates the cerebral hemispheres. The
transverse fissure separates the cerebrum from the cerebellum. Sulci and
gyri are surface features of the brain.
4. The _____ fissure separates the cerebrum from the cerebellum.
A) Longitudinal
B) Transverse
C) Central
D) Lateral
Correct Answer: Transverse
Rationale: The transverse fissure separates the cerebrum from the
cerebellum. The longitudinal fissure separates the two cerebral hemispheres.
This distinction is commonly tested on the Module 2 exam.
5. Describe the function of the brain ventricles.
A) They store neurotransmitters for synaptic transmission
B) They are chambers filled with cerebrospinal fluid that circulate and protect
the brain
C) They produce hormones for the endocrine system
D) They connect the brain to the spinal cord
, Correct Answer: They are chambers filled with cerebrospinal fluid that
circulate and protect the brain
Rationale: There are four ventricles in the interior of the brain, chambers
filled with cerebrospinal fluid which is produced there. Once formed, the CSF
circulates through the ventricles and into the subarachnoid space, bathing
and floating the brain.
6. What is the purpose of the blood-brain barrier?
A) To allow all particles to enter the CNS tissue
B) To provide a stable chemical environment for the nervous system
C) To increase blood flow to the brain
D) To produce cerebrospinal fluid
Correct Answer: To provide a stable chemical environment for the nervous
system
Rationale: The blood-brain barrier is a diffusion barrier which prevents most
particles from entering the central nervous system tissue, separating the
brain and spinal cord from general blood circulation. This maintains a stable
chemical environment for nervous system function.
7. The blood-brain barrier is formed by which glial cells?
A) Microglia
B) Ependymal cells
C) Astrocytes
D) Oligodendrocytes
