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CH 6 - Muscular System (Multiple choices)

Multiple choices questions re: ch. 6
STUDY
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D) method of attachment of the muscle to bone
Which one of the following is NOT a criteria generally used in naming muscles:

A) relative size of the muscle
B) number of origins of the muscle
C) shape of the muscle
D) method of attachment of the muscle to bone
E) action of the muscle
A) biceps brachii and triceps brachii
Which of the following muscles are antagonists:

A) biceps brachii and triceps brachii
B) bicpes femoris and biceps brachii
C) vastus medialis and vastus lateralis
D) masseter and temporalis
E) gastrocnemius and soleus
C) abduction
While doing "jumping jacks" during an exercise class, your arms and legs move laterally away from the midline of your body. This motion is called:

A) extension
B) flexion
C) abduction
D) adduction
E) circumduction
E) adductor muscles
Which of the following muscles adducts the thigh:

A) peroneus muscles
B) gluteus maximus
C) sartorius
D) quadriceps group
E) adductor muscles
A) deltoid
Which one of the following muscles is involved in abduction of the arm at the shoulder joint:

A) deltoid
B) biceps brachii
C) triceps brachii
D) latissimus dorsi
E) pectoralis major
A) closes, purses, and protrudes the lips
Which one of the following is the action of the orbicularis oris:

A) closes, purses, and protrudes the lips
B) pulls the lower lip down and back
C) draws the eyebrows together
D) allows blinking, squinting, and various other protective mechanisms for the eye
E) closes the jaw
C) synergist only
A muscle group that works with and assists the action of a prime mover is a(n):

A) antagonist only
B) fixator only
C) synergist only
D) antagonist and synergist
E) antagonist and fixator
D) platysma
35) Which of these muscles is not responsibile for flexion or extension of the arm?

A) biceps brachii
B) triceps brachii
C) brachialis
D) platysma
E) latissimus dorsi
D) buccinator
A nursing infant develops a powerful sucking muscle that adults also use for whistling or blowing a trumpet called the:

A) platysma
B) masseter
C) zygomaticus
D) buccinator
E) temporalis
D) cardiac muscle and smooth muscle
Muscle tissue that has involuntary regulation of contraction is:

A) cardiac muscle only
B) smooth muscle only
C) skeletal muscle only
D) cardiac muscle and smooth muscle
E) cardiac muscle and skeletal muscle
C) skeletal muscle only
The muscle tissue type that consists of single, very long, cylindrical, multinucleate cells with very obvious striations is:

A) cardiac muscle only
B) smooth muscle only
C) skeletal muscle only
D) cardiac and smooth muscle
E) cardiac and skeletal muscle
A) sarcolemma
The plasma membrane of a muscle cell is called the:

A) sarcolemma
B) sarcomere
C) myofilament
D) sarcoplasm
E) sarcoplasmic reticulum
E) attached to bones
Which of the following does not describe cardiac muscle tissue:

A) uninucleate
B) striations
C) involuntary
D) rhythmic contractions
E) attached to bones
D) perimysium
What type of membrane wraps a fascicle:

A) endomysium
B) epimysium
C) aponeuroses
D) perimysium
E) tendons
E) hematopoiesis
Which of the following is NOT a function of the muscular system:

A) production of movement
B) maintenance of posture
C) stabilization of joints
D) generation of heat
E) hematopoiesis
B) the contractile unit between two Z discs
A sarcomere is:

A) the nonfunctional unit of skeletal muscle
B) the contractile unit between two Z discs
C) the area between two intercalated discs
D) the wavy lines on the cell, as seen in a microscope
E) a compartment in a myofilament
A) thick filaments
Which one of the following is composed of myosin protein:

A) thick filaments
B) thin filaments
C) all myofilaments
D) Z discs
E) light bands
B) neuromuscular junction
The axon terminals of a nerve cell and the sarcolemma of a skeletal muscle cell join at the:

A) motor unit
B) neuromuscular junction
C) synaptic cleft
D) action potential
E) myofibrildeltoid
C) expose myosin binding sites on the actin
Which one of the following functions do calcium ions perform during skeletal muscle contraction:

A) increase the action potential transmitted along the sarcolemma
B) release the inhibition on Z discs
C) expose myosin binding sites on the actin
D) cause ATP binding to actin
E) bind to regulatory proteins on the myosin filaments, changing both their shape and
their position on the thick filaments
E) a neurotransmitter that stimulates skeletal muscle
Acetylcholine is:

A) an ion pump on the postsynaptic membrane
B) a source of energy for muscle contraction
C) a component of thick myofilaments
D) an oxygen-binding protein
E) a neurotransmitter that stimulates skeletal muscle
D) synaptic cleft
The gap between the axon terminal of a motor neuron and the sarcolemma of a skeletal muscle cell is called the:

A) motor unit
B) sarcomere
C) neuromuscular junction
D) synaptic cleft
E) cross bridge
D) axon terminals of the motor neuron
Neurotransmitters are released upon stimulation from a nerve impulse by the:

A) myofibrils
B) motor unit
C) thick filaments
D) axon terminals of the motor neuron
E) sarcolemma of the muscle cell
D) regulate intracellular calcium concentration
The major function of the sarcoplasmic reticulum in skeletal muscle contraction is to:

A) make and store phosphocreatine
B) synthesize actin and myosin myofilaments
C) provide a source of myosin for the contraction process
D) regulate intracellular calcium concentration
E) store ATP
B) the arrangement of myofilaments
The striations that give skeletal muscle its characteristic striped appearance are produced, for the most part, by:

A) a difference in the thickness of the sarcolemma B) the arrangement of myofilaments
C) the sarcoplasmic reticulum
D) the T tubules
E) the "cocked" positions of the heads of the thick filaments
B) acetylcholine (ACh) causes temporary permeability to sodium
Which of these events must occur first to trigger the skeletal muscle to generate an action potential and contract:

A) sodium ions rush into the cell
B) acetylcholine (ACh) causes temporary permeability to sodium
C) diffusion of potassium ions out of the cell
D) operation of the sodium-potassium pump
E) acetylcholinesterase (AchE) breaks down acetylcholine (ACh)
C) insufficient intracellular quantities of ATP due to excessive consumption
The condition of skeletal muscle fatigue can be best explained by:

A) the all-or-none law
B) the inability to generate sufficient quantities of ATP due to feedback regulation of synthesis
C) insufficient intracellular quantities of ATP due to excessive consumption
D) a total lack of ATP
E) inadequate numbers of mitochondria
E) the masseter and the temporalis
Which of the following muscles closes the jaw:

A) the buccinator
B) the masseter
C) the frontalis
D) the sternocleidomastoid
E) the masseter and the temporalis
D) latissimus dorsi
32) Which one of the following does NOT compress the abdomen:

A) internal oblique
B) external oblique
C) transversus abdominis
D) latissimus dorsi
E) rectus abdominis
A) pectoralis major
A muscle located on the ventral (anterior) side of the body is the:

A) pectoralis major
B) occipitalis
C) gastrocnemius
D) gluteus medius
E) latissimus dorsi
D) buccinator
A nursing infant develops a powerful sucking muscle that adults also use for whistling or blowing a trumpet called the:

A) platysma
B) masseter
C) zygomaticus
D) buccinator
E) temporalis
D) platysma
Which of these muscles is not responsibile for flexion or extension of the arm?

A) biceps brachii
B) triceps brachii
C) brachialis
D) platysma
E) latissimus dorsi
C) synergist only
A muscle group that works with and assists the action of a prime mover is a(n):

A) antagonist only
B) fixator only
C) synergist only
D) antagonist and synergist E) antagonist and fixator
D) Knee extension
What is the main function of the quadriceps femoris group:

A) Arm flexion
B) Hand supination
C) Thigh abduction
D) Knee extension
E) Foot inversion
D) sartorius
Which of these muscles is NOT located in the head:

A) frontalis
B) buccinator
C) zygomaticus
D) sartorius
E) orbicularis oculi
D) adduction
The movement opposite to abduction is:

A) flexion
B) rotation
C) circumduction
D) adduction
E) supination
D) contractions and movement, but not shortening
Isometric contractions produce:

A) contractions
B) movement
C) muscle shortening
D) contractions and movement, but not shortening
E) contractions and shortening, but not movement