BIO 167: Lab Exam 2 UPDATED Exam
Questions and CORRECT Answers
Dorsiflextion or extension of the great toe is expected during the planar reflex test. - CORRECT
ANSWER - false
In which area of the muscle is that the signal from the nervous system is transmitted into it? -
CORRECT ANSWER - The neuromuscular junction
What reaction is observed during the triceps reflex? - CORRECT ANSWER - Extension of
the elbow
Interneurons are part of the central nervous system and they are involved in reflex arcs. -
CORRECT ANSWER - True
What parts of the neuron transmits the outgoing signal to nearby cells? - CORRECT
ANSWER - Axon terminals
If you were testing the plantar reflex by stroking the lateral aspect of the sole of the foot in an
adult which of the following would be a normal response? - CORRECT ANSWER -
flexion of the toes downward
Which of the following lists the parts of a reflex arc in the correct sequence? - CORRECT
ANSWER - receptor, sensory neuron, interneuron, motor neuron, effector
In the Demonstrate Monosynaptic Reflexes Lab, why do the reflexes occur? Select all that apply.
- CORRECT ANSWER - By triggering the tendon of a muscle you are initiating the reflex
arc.
By triggering stretch receptors in the muscle you are initiating the reflex arc.
By triggering a skin receptor near the muscle you are initiating the reflex arc.
By triggering the muscle effector you are initiating the reflex arc.
, The ________ of the reflex hammer is used to tap on tendons or ligaments. - CORRECT
ANSWER - broad flat side
Which of the following areas can you use the broad flat side of the reflex hammer to test
reflexes? - CORRECT ANSWER - patellar
calcaneal
triceps brachii
In the shoulder elbow movement lab, this muscle is the prime mover for adduction of the arm at
the shoulder joint. - CORRECT ANSWER - pectoralis major
A muscle responsible to assist the movement of the prime mover is a - CORRECT
ANSWER - synergist
In the shoulder elbow movement lab, this muscle is the antagonist for forearm flexion of the arm
at the elbow joint. - CORRECT ANSWER - triceps brachii
The thin myofibril filament of a sarcomere is composed of a protein - CORRECT
ANSWER - actin
The highlighted muscle on the back of the arm in this cadaver is the - CORRECT
ANSWER - triceps brachii.
As the magnitude of stimulation increases, the skeletal muscle will contract with ________ force
due to the ________ number of muscle fibers contracting. - CORRECT ANSWER -
increased; increased
In the Shoulder elbow movement lab, this muscle is the prime mover for forearm flexion of the
arm at the elbow joint. - CORRECT ANSWER - brachialis
Questions and CORRECT Answers
Dorsiflextion or extension of the great toe is expected during the planar reflex test. - CORRECT
ANSWER - false
In which area of the muscle is that the signal from the nervous system is transmitted into it? -
CORRECT ANSWER - The neuromuscular junction
What reaction is observed during the triceps reflex? - CORRECT ANSWER - Extension of
the elbow
Interneurons are part of the central nervous system and they are involved in reflex arcs. -
CORRECT ANSWER - True
What parts of the neuron transmits the outgoing signal to nearby cells? - CORRECT
ANSWER - Axon terminals
If you were testing the plantar reflex by stroking the lateral aspect of the sole of the foot in an
adult which of the following would be a normal response? - CORRECT ANSWER -
flexion of the toes downward
Which of the following lists the parts of a reflex arc in the correct sequence? - CORRECT
ANSWER - receptor, sensory neuron, interneuron, motor neuron, effector
In the Demonstrate Monosynaptic Reflexes Lab, why do the reflexes occur? Select all that apply.
- CORRECT ANSWER - By triggering the tendon of a muscle you are initiating the reflex
arc.
By triggering stretch receptors in the muscle you are initiating the reflex arc.
By triggering a skin receptor near the muscle you are initiating the reflex arc.
By triggering the muscle effector you are initiating the reflex arc.
, The ________ of the reflex hammer is used to tap on tendons or ligaments. - CORRECT
ANSWER - broad flat side
Which of the following areas can you use the broad flat side of the reflex hammer to test
reflexes? - CORRECT ANSWER - patellar
calcaneal
triceps brachii
In the shoulder elbow movement lab, this muscle is the prime mover for adduction of the arm at
the shoulder joint. - CORRECT ANSWER - pectoralis major
A muscle responsible to assist the movement of the prime mover is a - CORRECT
ANSWER - synergist
In the shoulder elbow movement lab, this muscle is the antagonist for forearm flexion of the arm
at the elbow joint. - CORRECT ANSWER - triceps brachii
The thin myofibril filament of a sarcomere is composed of a protein - CORRECT
ANSWER - actin
The highlighted muscle on the back of the arm in this cadaver is the - CORRECT
ANSWER - triceps brachii.
As the magnitude of stimulation increases, the skeletal muscle will contract with ________ force
due to the ________ number of muscle fibers contracting. - CORRECT ANSWER -
increased; increased
In the Shoulder elbow movement lab, this muscle is the prime mover for forearm flexion of the
arm at the elbow joint. - CORRECT ANSWER - brachialis
