BIO 168 Lecture Exam #3 Latest Update 2025-
2026 100 Questions and 100% Verified Correct
Answers Guaranteed A+
A band is - CORRECTANSWER: region that contains both thick and thin filaments
A common activity many athletes perform in training is climbing a rope with only the
hands. What muscles that are utilized are mismatched in this process?
The deltoid muscle is used to reach and grab the rope and latissimus dorsi is used to
pull the body up.
Pectoralis major allows to extend the arm to reach for the rope, and latissimus dorsi
contractions pull the body up while holding onto the rope.
Triceps brachii is used to extend the lower arm up to reach for the rope and pectoralis
major is used to pull the body up by adducting the upper arm
Flexor digitorum superficialis is used to grab the rope and bicep brachii is used in this
process to pull the body up. - CORRECTANSWER: Pectoralis major allows to extend
the arm to reach for the rope, and latissimus dorsi contractions pull the body up while
holding onto the rope.
A football player received the bad news that he tore his anterior cruciate ligament. What
does this mean for the range of motion of his knee?
He will not be able to straighten his knee and will suffer a disabling injury.
His knee will exhibit more extension and hyperextension by shifting the tibia too far
anteriorly on the femur.
His knee will exhibit more flexion and his tibia may dislocate from the femur posteriorly.
He will have difficulty bending the knee and it will allow too much lateral movement. -
CORRECTANSWER: His knee will exhibit more extension and hyperextension by
shifting the tibia too far anteriorly on the femur.
,A freely moveable joint is classified as a __________.
gomphosis
amphiarthrosis
diarthrosis
synarthrosis - CORRECTANSWER: diarthrisis
A muscle that anchors a bone in place to make the movement more efficient is a(n)
__________
agonist
antagonist
synergist
fixator - CORRECTANSWER: fixator
A muscle that opposes or slows an action is called a(n) __________.
fixator
antagonist
synergist
agonist - CORRECTANSWER: antagonist
A pathway of ATP production that results in the formation of lactic acid is __________.
aerobic catabolism
, anabolism
glycolytic catabolism
oxidative catabolism - CORRECTANSWER: glycolytic catabolism
A single motor neuron together with all the skeletal muscle fibers it innervates is called
a:
motor unit.
synaptic cleft.
neuromuscular junction.
motor end plate. - CORRECTANSWER: motor unit
a type of chemically-gated ion channel located on the junctional folds of the muscle
fiber. - CORRECTANSWER: Acetylcholine receptor
a type of voltage-gated ion channel located on the axon terminal. -
CORRECTANSWER: calcium channel
a type of voltage-gated ion channel located on the sarcolemma of the muscle fiber. -
CORRECTANSWER: sodium channel
amphiarthrisis - CORRECTANSWER: a joint that is slightly movable
Between the start of the latent period and the start of the contraction period, there is a
time interval during which the muscle cannot respond to another stimulus. This brief
period is known as the __________.
2026 100 Questions and 100% Verified Correct
Answers Guaranteed A+
A band is - CORRECTANSWER: region that contains both thick and thin filaments
A common activity many athletes perform in training is climbing a rope with only the
hands. What muscles that are utilized are mismatched in this process?
The deltoid muscle is used to reach and grab the rope and latissimus dorsi is used to
pull the body up.
Pectoralis major allows to extend the arm to reach for the rope, and latissimus dorsi
contractions pull the body up while holding onto the rope.
Triceps brachii is used to extend the lower arm up to reach for the rope and pectoralis
major is used to pull the body up by adducting the upper arm
Flexor digitorum superficialis is used to grab the rope and bicep brachii is used in this
process to pull the body up. - CORRECTANSWER: Pectoralis major allows to extend
the arm to reach for the rope, and latissimus dorsi contractions pull the body up while
holding onto the rope.
A football player received the bad news that he tore his anterior cruciate ligament. What
does this mean for the range of motion of his knee?
He will not be able to straighten his knee and will suffer a disabling injury.
His knee will exhibit more extension and hyperextension by shifting the tibia too far
anteriorly on the femur.
His knee will exhibit more flexion and his tibia may dislocate from the femur posteriorly.
He will have difficulty bending the knee and it will allow too much lateral movement. -
CORRECTANSWER: His knee will exhibit more extension and hyperextension by
shifting the tibia too far anteriorly on the femur.
,A freely moveable joint is classified as a __________.
gomphosis
amphiarthrosis
diarthrosis
synarthrosis - CORRECTANSWER: diarthrisis
A muscle that anchors a bone in place to make the movement more efficient is a(n)
__________
agonist
antagonist
synergist
fixator - CORRECTANSWER: fixator
A muscle that opposes or slows an action is called a(n) __________.
fixator
antagonist
synergist
agonist - CORRECTANSWER: antagonist
A pathway of ATP production that results in the formation of lactic acid is __________.
aerobic catabolism
, anabolism
glycolytic catabolism
oxidative catabolism - CORRECTANSWER: glycolytic catabolism
A single motor neuron together with all the skeletal muscle fibers it innervates is called
a:
motor unit.
synaptic cleft.
neuromuscular junction.
motor end plate. - CORRECTANSWER: motor unit
a type of chemically-gated ion channel located on the junctional folds of the muscle
fiber. - CORRECTANSWER: Acetylcholine receptor
a type of voltage-gated ion channel located on the axon terminal. -
CORRECTANSWER: calcium channel
a type of voltage-gated ion channel located on the sarcolemma of the muscle fiber. -
CORRECTANSWER: sodium channel
amphiarthrisis - CORRECTANSWER: a joint that is slightly movable
Between the start of the latent period and the start of the contraction period, there is a
time interval during which the muscle cannot respond to another stimulus. This brief
period is known as the __________.
