BIOS 251 Anatomy and Physiology I
with Lab Final Exam Version 2
Question 1
Which of the following is NOT a major function of muscle tissue?
A. Movement
B. Heat production
C. Nutrient storage
D. Posture maintenance
Correct Answer: C. Nutrient storage
Explanation: Muscle tissue is responsible for movement, heat production, and posture
maintenance. Nutrient storage is primarily a function of adipose tissue and the liver, not muscle
tissue.
Question 2
In an isotonic contraction, the muscle:
A. Shortens or lengthens while maintaining constant tension
B. Develops tension without changing length
C. Relaxes completely
D. Generates no force
Correct Answer: A. Shortens or lengthens while maintaining constant tension
Explanation: In an isotonic contraction, the muscle changes length (shortens in concentric
contractions or lengthens in eccentric contractions) while maintaining constant tension, as seen
in lifting or lowering a weight.
Question 3
The form of a muscle that stabilizes the origin of the prime mover so that it can act more
efficiently is called the:
,A. Fixator
B. Agonist
C. Antagonist
D. Synergist
Correct Answer: A. Fixator
Explanation: Fixator muscles stabilize the origin of the prime mover (agonist), ensuring
efficient movement by preventing unwanted motion at the origin.
Question 4
When you flex your biceps brachii and lift your cell phone off from the tabletop, the fulcrum is
represented in the lever system by the:
A. Elbow joint
B. Biceps brachii
C. Cell phone
D. Forearm
Correct Answer: A. Elbow joint
Explanation: In a lever system, the fulcrum is the pivot point, which is the elbow joint in this
case, allowing the biceps brachii to lift the cell phone (load).
Question 5
Which of the following types of cells display the property of electrical excitability?
A. Neurons and muscle cells
B. Epithelial cells
C. Connective tissue cells
D. Glial cells
Correct Answer: A. Neurons and muscle cells
Explanation: Neurons and muscle cells (skeletal, cardiac, and smooth) exhibit electrical
excitability, generating action potentials to transmit signals or contract.
, Question 6
The component of a neuron that provides the spatial integration of incoming signals is the:
A. Soma (cell body)
B. Dendrites
C. Axon
D. Axon terminal
Correct Answer: A. Soma (cell body)
Explanation: The soma integrates excitatory and inhibitory signals from dendrites,
determining whether an action potential is generated.
Question 7
Which of the following ventricles is found along the midline superior to the hypothalamus and
within the central gray region?
A. Third ventricle
B. Lateral ventricle
C. Fourth ventricle
D. Cerebral aqueduct
Correct Answer: A. Third ventricle
Explanation: The third ventricle is located along the midline, superior to the hypothalamus,
within the central gray region, connecting to the lateral and fourth ventricles.
Question 8
Which cranial nerve is involved in generating eye movements?
A. Oculomotor nerve (III)
B. Optic nerve (II)
C. Trigeminal nerve (V)
D. Vagus nerve (X)
Correct Answer: A. Oculomotor nerve (III)
with Lab Final Exam Version 2
Question 1
Which of the following is NOT a major function of muscle tissue?
A. Movement
B. Heat production
C. Nutrient storage
D. Posture maintenance
Correct Answer: C. Nutrient storage
Explanation: Muscle tissue is responsible for movement, heat production, and posture
maintenance. Nutrient storage is primarily a function of adipose tissue and the liver, not muscle
tissue.
Question 2
In an isotonic contraction, the muscle:
A. Shortens or lengthens while maintaining constant tension
B. Develops tension without changing length
C. Relaxes completely
D. Generates no force
Correct Answer: A. Shortens or lengthens while maintaining constant tension
Explanation: In an isotonic contraction, the muscle changes length (shortens in concentric
contractions or lengthens in eccentric contractions) while maintaining constant tension, as seen
in lifting or lowering a weight.
Question 3
The form of a muscle that stabilizes the origin of the prime mover so that it can act more
efficiently is called the:
,A. Fixator
B. Agonist
C. Antagonist
D. Synergist
Correct Answer: A. Fixator
Explanation: Fixator muscles stabilize the origin of the prime mover (agonist), ensuring
efficient movement by preventing unwanted motion at the origin.
Question 4
When you flex your biceps brachii and lift your cell phone off from the tabletop, the fulcrum is
represented in the lever system by the:
A. Elbow joint
B. Biceps brachii
C. Cell phone
D. Forearm
Correct Answer: A. Elbow joint
Explanation: In a lever system, the fulcrum is the pivot point, which is the elbow joint in this
case, allowing the biceps brachii to lift the cell phone (load).
Question 5
Which of the following types of cells display the property of electrical excitability?
A. Neurons and muscle cells
B. Epithelial cells
C. Connective tissue cells
D. Glial cells
Correct Answer: A. Neurons and muscle cells
Explanation: Neurons and muscle cells (skeletal, cardiac, and smooth) exhibit electrical
excitability, generating action potentials to transmit signals or contract.
, Question 6
The component of a neuron that provides the spatial integration of incoming signals is the:
A. Soma (cell body)
B. Dendrites
C. Axon
D. Axon terminal
Correct Answer: A. Soma (cell body)
Explanation: The soma integrates excitatory and inhibitory signals from dendrites,
determining whether an action potential is generated.
Question 7
Which of the following ventricles is found along the midline superior to the hypothalamus and
within the central gray region?
A. Third ventricle
B. Lateral ventricle
C. Fourth ventricle
D. Cerebral aqueduct
Correct Answer: A. Third ventricle
Explanation: The third ventricle is located along the midline, superior to the hypothalamus,
within the central gray region, connecting to the lateral and fourth ventricles.
Question 8
Which cranial nerve is involved in generating eye movements?
A. Oculomotor nerve (III)
B. Optic nerve (II)
C. Trigeminal nerve (V)
D. Vagus nerve (X)
Correct Answer: A. Oculomotor nerve (III)
