ESSENTIAL HUMAN ANATOMY AND PHYSIOLOGY II W LAB COMPREHENSIVE EXAM
SCRIPT COMPLETE QUESTIONS VERIFIED SOLUTIONS
Question:
Where is the integration center of a reflex located.
Answer:
CNS
Question:
Which of the following statements is true about reflexes? A. reflexes only involve the brainstem or
higher levels of processing B. regulation of blood sugar by hormones is one example of reflex C.
Reflexes cannot be tested because they are internal D. Pulling a hand away from a hot flame is not a
reflex; it is entirely voluntary.
Answer:
B. Regulation of blood sugar by hormones is one example of a reflex
Question:
What is true about the stretch reflex? A. stretch reflexes help to increase the stretch on a muscle B.
the patellar reflex tests the stretch reflex of the patella C. The muscle spindle detects stretch within
the muscle D. The effect of the motor signal is to relax a muscle.
Answer:
C. The muscle spindle detects stretch within the muscle
Question:
What is true about the flexor withdrawal reflex? A. It does not involve interneurons B. It involves
excitatory interneurons C. It invovles inhibitory interneurons D. The effect of the reflex is to create a
co-contraction of the two muscles E. A and D F. B and C.
,Answer:
F. B and C
Question:
Your doctor taps on your patellar tendon. List out the steps, in detail, of the nervous pathway of the
reflex he is testing. Include any sensory organs involved and the action of the reflex.
Answer:
Stretch reflex: stretch on patellar tendon muscle spindle detects stretch afferent neuron through
DRG Spinal cord Synapses directly on a motor neuron Action: to muscle fiber to contract
quadriceps (kicking foot)
Question:
Botulism is a disease caused by a neurotoxin that interferes with the release of Acetylcholine.
Patients with this disease experience flaccid paralysis, or the inability to contract their muscles.
Explain why this would occur.
Answer:
The nervous system interacts with the muscular system at the neuromuscular junction.
Acetylcholine must be released from the presynaptic motor neuron into the synapse to bind onto
muscle fiber, eventually causing a muscle contraction. Without the release of acetylcholine, there
will be no interaction between the nervous system and the muscular system and therefore no muscle
contraction
Question:
This layer of the meninges is tightly attached to the brain.
Answer:
Pia mater
Question:
The _____ fissure seperates the right and left cerebral hemisphere.
Answer:
,Median longitudinal
Question:
Describe the function of the brain ventricles.
Answer:
There are four ventricles in the interior of the brain, chamber 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
Question:
All of the following are functions of the hypothalamus except: A. maintain homeostasis B. Controls
the pituitary gland C. Links the nervous and endocrine system D. Relays sensory impulses to the
cerebrum.
Answer:
D. Relays sensory impulses to the cerebrum
Question:
What is the largest portion of the brain?
Answer:
cerebrum
Question:
This region of the brain acts to coordinate multiple sources of sensory information A. Primary
sensory cortex B. Primary motor cortex C. Association area D. Precentral gyrus D. Postcentral
gyrus.
Answer:
C. Association area
, Question:
A patient is having difficulty producing speech sounds, but other motor movements are normal.
Which area of the brain is most likely damaged.
Answer:
Broca's area
Question:
What is muscle tone and how is it maintained.
Answer:
Muscle tone is the degree at which muscles remain partially contracted while at rest. Muscle tone is
continuously monitored and maintained by the cerebellum to keep bones and joints in place
Question:
Which statement is false concerning the brainstem. A. The medulla portion of the brainstem
continous with the spinal cord B. The medulla contains reflex centers to regulate vasoconstriction C.
The midbrain contains the superior and inferior colliculi D. The midbrain helps to regulate
breathing.
Answer:
D. The midbrain helps to regulate breathing
Question:
Which of the following is true concerning the cerebellum? A. The gray matter is internal while the
white matter is external B. The cerebellum works to plan body movements by relaying information
to the spinal cord C. The anterior lobe recieves information from the body trunk D. The vermis
coordinates the trunk and shoulder movements.
Answer:
C. The anterior lobe recieves information from the body trunk
Question:
SCRIPT COMPLETE QUESTIONS VERIFIED SOLUTIONS
Question:
Where is the integration center of a reflex located.
Answer:
CNS
Question:
Which of the following statements is true about reflexes? A. reflexes only involve the brainstem or
higher levels of processing B. regulation of blood sugar by hormones is one example of reflex C.
Reflexes cannot be tested because they are internal D. Pulling a hand away from a hot flame is not a
reflex; it is entirely voluntary.
Answer:
B. Regulation of blood sugar by hormones is one example of a reflex
Question:
What is true about the stretch reflex? A. stretch reflexes help to increase the stretch on a muscle B.
the patellar reflex tests the stretch reflex of the patella C. The muscle spindle detects stretch within
the muscle D. The effect of the motor signal is to relax a muscle.
Answer:
C. The muscle spindle detects stretch within the muscle
Question:
What is true about the flexor withdrawal reflex? A. It does not involve interneurons B. It involves
excitatory interneurons C. It invovles inhibitory interneurons D. The effect of the reflex is to create a
co-contraction of the two muscles E. A and D F. B and C.
,Answer:
F. B and C
Question:
Your doctor taps on your patellar tendon. List out the steps, in detail, of the nervous pathway of the
reflex he is testing. Include any sensory organs involved and the action of the reflex.
Answer:
Stretch reflex: stretch on patellar tendon muscle spindle detects stretch afferent neuron through
DRG Spinal cord Synapses directly on a motor neuron Action: to muscle fiber to contract
quadriceps (kicking foot)
Question:
Botulism is a disease caused by a neurotoxin that interferes with the release of Acetylcholine.
Patients with this disease experience flaccid paralysis, or the inability to contract their muscles.
Explain why this would occur.
Answer:
The nervous system interacts with the muscular system at the neuromuscular junction.
Acetylcholine must be released from the presynaptic motor neuron into the synapse to bind onto
muscle fiber, eventually causing a muscle contraction. Without the release of acetylcholine, there
will be no interaction between the nervous system and the muscular system and therefore no muscle
contraction
Question:
This layer of the meninges is tightly attached to the brain.
Answer:
Pia mater
Question:
The _____ fissure seperates the right and left cerebral hemisphere.
Answer:
,Median longitudinal
Question:
Describe the function of the brain ventricles.
Answer:
There are four ventricles in the interior of the brain, chamber 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
Question:
All of the following are functions of the hypothalamus except: A. maintain homeostasis B. Controls
the pituitary gland C. Links the nervous and endocrine system D. Relays sensory impulses to the
cerebrum.
Answer:
D. Relays sensory impulses to the cerebrum
Question:
What is the largest portion of the brain?
Answer:
cerebrum
Question:
This region of the brain acts to coordinate multiple sources of sensory information A. Primary
sensory cortex B. Primary motor cortex C. Association area D. Precentral gyrus D. Postcentral
gyrus.
Answer:
C. Association area
, Question:
A patient is having difficulty producing speech sounds, but other motor movements are normal.
Which area of the brain is most likely damaged.
Answer:
Broca's area
Question:
What is muscle tone and how is it maintained.
Answer:
Muscle tone is the degree at which muscles remain partially contracted while at rest. Muscle tone is
continuously monitored and maintained by the cerebellum to keep bones and joints in place
Question:
Which statement is false concerning the brainstem. A. The medulla portion of the brainstem
continous with the spinal cord B. The medulla contains reflex centers to regulate vasoconstriction C.
The midbrain contains the superior and inferior colliculi D. The midbrain helps to regulate
breathing.
Answer:
D. The midbrain helps to regulate breathing
Question:
Which of the following is true concerning the cerebellum? A. The gray matter is internal while the
white matter is external B. The cerebellum works to plan body movements by relaying information
to the spinal cord C. The anterior lobe recieves information from the body trunk D. The vermis
coordinates the trunk and shoulder movements.
Answer:
C. The anterior lobe recieves information from the body trunk
Question:
