BIOL 251: Human Anatomy & Physiology I w/Lab 2026 - 2027
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Module 6: Nervous System, Nervous Tissue, and the CNS
Complete Exam Review Questions with Verified Answers |
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Question 1
During a lumbar puncture, cerebrospinal fluid (CSF) is collected for
diagnostic purposes. The needle passes through the thin meninge with
hair-like extensions of tissue that contains CSF in the space beneath it.
Which meningeal layer is this?
A) Arachnoid mater
B) Dura mater
C) Pia mater
D) Subarachnoid space
Correct Answer: A) Arachnoid mater
Explanation: The arachnoid mater is the thin, web-like middle
meningeal layer with hair-like extensions (trabeculae) that spans
the subarachnoid space containing CSF. The dura mater is the tough
outer layer. The pia mater is the delicate inner layer that adheres to
the brain surface. During a lumbar puncture, the needle passes
,through the dura mater and arachnoid mater to enter the
subarachnoid space where CSF is collected.
Question 2
Sulci are deep grooves in the brain that separate large regions such as
the cerebral hemispheres.
A) True
B) False
Correct Answer: B) False
Explanation: Sulci are shallow grooves on the brain surface, not
deep grooves. Deep grooves that separate large regions of the brain
are called fissures. The longitudinal fissure separates the cerebral
hemispheres, and the transverse cerebral fissure separates the
cerebrum from the cerebellum. Sulci increase the surface area of
the cerebral cortex and divide the brain into gyri (ridges).
Question 3
Theta waves are typically observed in:
A) Comatose patients with no brain activity
B) Adults when they are asleep
C) Children and sometimes in adults during concentration
,D) Adults when they are deeply relaxed with their eyes closed
E) All individuals during periods of extreme mental focus
Correct Answer: C) Children and sometimes in adults during
concentration
Explanation: Theta waves (4-8 Hz) are commonly observed in
children and sometimes in adults during concentration, meditation,
or drowsiness. Alpha waves (8-13 Hz) are seen in adults when
deeply relaxed with eyes closed. Delta waves (0.5-4 Hz) occur in
deep sleep and comatose patients. Beta waves (13-30 Hz) occur
during active thinking and mental focus.
Question 4
In the image, the letter E is pointing to which structure?
A) Frontal lobe
B) Central sulcus
C) Occipital lobe
D) Parieto-occipital sulcus
E) Temporal lobe
Correct Answer: D) Parieto-occipital sulcus
Explanation: The parieto-occipital sulcus separates the parietal lobe
from the occipital lobe on the medial surface of the brain. The
central sulcus separates the frontal lobe from the parietal lobe. The
lateral sulcus separates the temporal lobe from the frontal and
, parietal lobes. The parieto-occipital sulcus is a deep groove that
marks the boundary between the parietal and occipital lobes.
Question 5
Match the structure with its function:
A) Processes sensory input from the body → Parietal lobe
B) Functions in decision making and personality → Frontal lobe
C) Involved in processing auditory information → Temporal lobe
D) Responsible for visual processing → Occipital lobe
Correct Answer: All matched correctly
Explanation: The parietal lobe processes sensory input from the
body (somatosensory cortex). The frontal lobe functions in decision
making, personality, motor control (primary motor cortex), and
higher cognitive functions. The temporal lobe is involved in
processing auditory information (primary auditory cortex) and
memory. The occipital lobe is responsible for visual processing
(primary visual cortex).
Question 6
Which sulcus separates the temporal lobe from the frontal and parietal
lobes?
Portage learning
Module 6: Nervous System, Nervous Tissue, and the CNS
Complete Exam Review Questions with Verified Answers |
LockDown Browser (GUARANTEED PASS)
Question 1
During a lumbar puncture, cerebrospinal fluid (CSF) is collected for
diagnostic purposes. The needle passes through the thin meninge with
hair-like extensions of tissue that contains CSF in the space beneath it.
Which meningeal layer is this?
A) Arachnoid mater
B) Dura mater
C) Pia mater
D) Subarachnoid space
Correct Answer: A) Arachnoid mater
Explanation: The arachnoid mater is the thin, web-like middle
meningeal layer with hair-like extensions (trabeculae) that spans
the subarachnoid space containing CSF. The dura mater is the tough
outer layer. The pia mater is the delicate inner layer that adheres to
the brain surface. During a lumbar puncture, the needle passes
,through the dura mater and arachnoid mater to enter the
subarachnoid space where CSF is collected.
Question 2
Sulci are deep grooves in the brain that separate large regions such as
the cerebral hemispheres.
A) True
B) False
Correct Answer: B) False
Explanation: Sulci are shallow grooves on the brain surface, not
deep grooves. Deep grooves that separate large regions of the brain
are called fissures. The longitudinal fissure separates the cerebral
hemispheres, and the transverse cerebral fissure separates the
cerebrum from the cerebellum. Sulci increase the surface area of
the cerebral cortex and divide the brain into gyri (ridges).
Question 3
Theta waves are typically observed in:
A) Comatose patients with no brain activity
B) Adults when they are asleep
C) Children and sometimes in adults during concentration
,D) Adults when they are deeply relaxed with their eyes closed
E) All individuals during periods of extreme mental focus
Correct Answer: C) Children and sometimes in adults during
concentration
Explanation: Theta waves (4-8 Hz) are commonly observed in
children and sometimes in adults during concentration, meditation,
or drowsiness. Alpha waves (8-13 Hz) are seen in adults when
deeply relaxed with eyes closed. Delta waves (0.5-4 Hz) occur in
deep sleep and comatose patients. Beta waves (13-30 Hz) occur
during active thinking and mental focus.
Question 4
In the image, the letter E is pointing to which structure?
A) Frontal lobe
B) Central sulcus
C) Occipital lobe
D) Parieto-occipital sulcus
E) Temporal lobe
Correct Answer: D) Parieto-occipital sulcus
Explanation: The parieto-occipital sulcus separates the parietal lobe
from the occipital lobe on the medial surface of the brain. The
central sulcus separates the frontal lobe from the parietal lobe. The
lateral sulcus separates the temporal lobe from the frontal and
, parietal lobes. The parieto-occipital sulcus is a deep groove that
marks the boundary between the parietal and occipital lobes.
Question 5
Match the structure with its function:
A) Processes sensory input from the body → Parietal lobe
B) Functions in decision making and personality → Frontal lobe
C) Involved in processing auditory information → Temporal lobe
D) Responsible for visual processing → Occipital lobe
Correct Answer: All matched correctly
Explanation: The parietal lobe processes sensory input from the
body (somatosensory cortex). The frontal lobe functions in decision
making, personality, motor control (primary motor cortex), and
higher cognitive functions. The temporal lobe is involved in
processing auditory information (primary auditory cortex) and
memory. The occipital lobe is responsible for visual processing
(primary visual cortex).
Question 6
Which sulcus separates the temporal lobe from the frontal and parietal
lobes?
