EXAM 3 (A&P) |THE SMART WAY TO PASS | REAL TESTS,
REAL RESULTS!
What influences the appearance and function of skeletal muscle?
A) arrangement of the pattern of fascicles
B) number of muscle cells in a motor unit
C) presence of perimysium around fascicles
D) presence of endomysium around muscle cells Answer: arrangement of the pattern of
fascicles
Muscles with a triangular shape, such as the pectoralis major muscle in the chest, typically have
a: Answer: convergent fascicle arrangement.
What best describes fusiform skeletal muscle structure?
A) Fusiform muscles are broad and taper to a single tendon.
B) Fusiform muscles have fascicles that feather out at one angle from a tendon.
C) Fusiform muscles may wrap around a bone or have a twisted appearance.
D) Fusiform muscles tend to be thicker in their belly and taper at their ends. Answer: Fusiform
muscles tend to be thicker in their belly and taper at their ends.
Which of the following muscles is named using a directional term?
A) orbicularis oris
B) vastus lateralis
C) gastrocnemius
D) adductor longus Answer: vastus lateralis
Which of the following muscles is named for its shape?
A) triceps brachii
B) pronator quadratus
C) vastus medialis
D) levator scapulae Answer: pronator quadratus
Which of the following muscles is named for its action?
A) deltoid
B) gluteus maximus
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,C) biceps brachii
D) adductor magnus Answer: adductor magnus
What can you tell about a muscle whose name includes the word serratus?
A) It is a large muscle.
B) Its appearance is serrated or jagged.
C) It is a supinator.
D) It is located on the medial side of the body. Answer: Its appearance is serrated or jagged.
How do most circular muscles function? Answer: sphincters
Triceps brachii and biceps brachii perform opposing actions and are classified as: Answer:
antagonists
What type of muscle performs an anchoring function by holding a bone in place? Answer:
Fixator
Which type of muscle works together with the agonist? Answer: synergist
In the human body, what is the fulcrum in a lever system? Answer: The fulcrum is the joint at
which movement occurs.
What lever class has the fulcrum situated between the force and the load? Answer: first-class
lever
Most levers in the human body are: Answer: ) third-class levers
What joint serves as the fulcrum when triceps brachii moves the forearm? Answer: elbow joint
A lever system works at a mechanical advantage when: Answer: the fulcrum is located farther
from the applied force
Standing on tiptoes is an example of a: Answer: second-class lever system
Where does the mentalis muscle insert? Answer: skin of the chin
Where is the origin of the frontalis muscle? Answer: epicranial aponeurosis
Identify the corrugator supercilii muscle Answer: eyebrow bone
Which muscle assists with smiling? Answer: zygomaticus major
) Which muscle works as an antagonist to orbicularis oculi? Answer: levator palpebrae
superioris
Which of the following muscles is NOT associated with the mouth? Answer: orbicularis oculi
Which muscles forms the anterior surface of the neck? Answer: platysma
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, Identify the lateral rectus muscle Answer: attaches eye
Which of the following is the action of the levator palpebrae superioris muscle? Answer:
Levator palpebrae superioris elevates, or opens, the upper eyelid.
What is NOT a bone to which the sternocleidomastoid muscle is attached? Answer: mandible
Damage to the trapezius would cause a person to have difficulty Answer: extending the head
Damage to the stylohyoid, mylohyoid, and geniohyoid impairs: Answer: swallowing
The masseter and temporalis muscles provide much of the force for Answer: chewing
Which of the following is NOT a muscle involved in the movement of the tongue to manipulate
food while chewing and pushing the bolus of food into the throat Answer: stylohoid
What is the proper position of the erector spinae muscles situated from medially to laterally
relative to the axis of the vertebral column? Answer: spinalis, longissimus, iliocostalis
Medial rotation of the eyeball is performed by the: Answer: medial rectus muscle.
Identify the rectus abdominis muscle. Answer: abs
From superficial to deep, the three muscles of the lateral abdominal wall are: Answer: external
oblique, internal oblique, transversus abdominis.
Muscular walls of the thorax and abdomen are composed of: Answer: oblique and rectus
muscles
Which of the following is NOT a muscle of respiration? Answer: external oblique
Damage to which of the following muscles would interfere most with the ability to breathe?
Answer: intercostals
Which muscle is the agonist for sitting up? Answer: rectus abdominis
The superior aspect of the pubic bones is the origin of: Answer: rectus abdominis
The levator ani inserts on the Answer: coccyx
Which muscle provides voluntary control of defecation? Answer: external anal sphincter
Which muscle assists with the erection of the penis and clitoris? Answer: bulbospongiosus
Which muscles elevate the scapula? Answer: trapezius and levator scapulae
Damage to the pectoralis major would interfere with a person's ability to: Answer: adduct the
humerus
Which muscle is a powerful agonist of adduction and medial rotation of the arm? Answer:
latissimus dorsi
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REAL RESULTS!
What influences the appearance and function of skeletal muscle?
A) arrangement of the pattern of fascicles
B) number of muscle cells in a motor unit
C) presence of perimysium around fascicles
D) presence of endomysium around muscle cells Answer: arrangement of the pattern of
fascicles
Muscles with a triangular shape, such as the pectoralis major muscle in the chest, typically have
a: Answer: convergent fascicle arrangement.
What best describes fusiform skeletal muscle structure?
A) Fusiform muscles are broad and taper to a single tendon.
B) Fusiform muscles have fascicles that feather out at one angle from a tendon.
C) Fusiform muscles may wrap around a bone or have a twisted appearance.
D) Fusiform muscles tend to be thicker in their belly and taper at their ends. Answer: Fusiform
muscles tend to be thicker in their belly and taper at their ends.
Which of the following muscles is named using a directional term?
A) orbicularis oris
B) vastus lateralis
C) gastrocnemius
D) adductor longus Answer: vastus lateralis
Which of the following muscles is named for its shape?
A) triceps brachii
B) pronator quadratus
C) vastus medialis
D) levator scapulae Answer: pronator quadratus
Which of the following muscles is named for its action?
A) deltoid
B) gluteus maximus
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,C) biceps brachii
D) adductor magnus Answer: adductor magnus
What can you tell about a muscle whose name includes the word serratus?
A) It is a large muscle.
B) Its appearance is serrated or jagged.
C) It is a supinator.
D) It is located on the medial side of the body. Answer: Its appearance is serrated or jagged.
How do most circular muscles function? Answer: sphincters
Triceps brachii and biceps brachii perform opposing actions and are classified as: Answer:
antagonists
What type of muscle performs an anchoring function by holding a bone in place? Answer:
Fixator
Which type of muscle works together with the agonist? Answer: synergist
In the human body, what is the fulcrum in a lever system? Answer: The fulcrum is the joint at
which movement occurs.
What lever class has the fulcrum situated between the force and the load? Answer: first-class
lever
Most levers in the human body are: Answer: ) third-class levers
What joint serves as the fulcrum when triceps brachii moves the forearm? Answer: elbow joint
A lever system works at a mechanical advantage when: Answer: the fulcrum is located farther
from the applied force
Standing on tiptoes is an example of a: Answer: second-class lever system
Where does the mentalis muscle insert? Answer: skin of the chin
Where is the origin of the frontalis muscle? Answer: epicranial aponeurosis
Identify the corrugator supercilii muscle Answer: eyebrow bone
Which muscle assists with smiling? Answer: zygomaticus major
) Which muscle works as an antagonist to orbicularis oculi? Answer: levator palpebrae
superioris
Which of the following muscles is NOT associated with the mouth? Answer: orbicularis oculi
Which muscles forms the anterior surface of the neck? Answer: platysma
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, Identify the lateral rectus muscle Answer: attaches eye
Which of the following is the action of the levator palpebrae superioris muscle? Answer:
Levator palpebrae superioris elevates, or opens, the upper eyelid.
What is NOT a bone to which the sternocleidomastoid muscle is attached? Answer: mandible
Damage to the trapezius would cause a person to have difficulty Answer: extending the head
Damage to the stylohyoid, mylohyoid, and geniohyoid impairs: Answer: swallowing
The masseter and temporalis muscles provide much of the force for Answer: chewing
Which of the following is NOT a muscle involved in the movement of the tongue to manipulate
food while chewing and pushing the bolus of food into the throat Answer: stylohoid
What is the proper position of the erector spinae muscles situated from medially to laterally
relative to the axis of the vertebral column? Answer: spinalis, longissimus, iliocostalis
Medial rotation of the eyeball is performed by the: Answer: medial rectus muscle.
Identify the rectus abdominis muscle. Answer: abs
From superficial to deep, the three muscles of the lateral abdominal wall are: Answer: external
oblique, internal oblique, transversus abdominis.
Muscular walls of the thorax and abdomen are composed of: Answer: oblique and rectus
muscles
Which of the following is NOT a muscle of respiration? Answer: external oblique
Damage to which of the following muscles would interfere most with the ability to breathe?
Answer: intercostals
Which muscle is the agonist for sitting up? Answer: rectus abdominis
The superior aspect of the pubic bones is the origin of: Answer: rectus abdominis
The levator ani inserts on the Answer: coccyx
Which muscle provides voluntary control of defecation? Answer: external anal sphincter
Which muscle assists with the erection of the penis and clitoris? Answer: bulbospongiosus
Which muscles elevate the scapula? Answer: trapezius and levator scapulae
Damage to the pectoralis major would interfere with a person's ability to: Answer: adduct the
humerus
Which muscle is a powerful agonist of adduction and medial rotation of the arm? Answer:
latissimus dorsi
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