Study Guide ch.10 Flashcards
An entire skeletal muscle is covered by a coarse sheath called:
a) endomysium
b) perimysium
c) epimysium
d) aponeurosis
epimysium
Muscles that are arranged like the feathers in a pulme are described as:
a) parallel
b) convergent
c) sphincter
d) pennate
pennate
An aponeurosis is:
a) broad and flat
b) tube-shaped
c) featherlike
d) none of the above
broad and flat
Antagonists are muscles that:
a) oppose prime movers
b) facilitate prime movers
c) stabilize muscles
d) directly perform movements
oppose prime movers
A fixed point about which a rod move is called a:
a) lever
b) bone
c) belly
d) fulcrum
fulcrum
In first-class levers, the:
a) fulcrum is between the pull and the load
b) load is between the fulcrum and the force
c) force is between the fulcrum and the load
d) load and force are equal
fulcrum is between the pull and the load
True or False
The origin of a muscle is the point of attachment that moves when the muscle contracts
False
True or False
Skeletal muscles usually act in groups rather than individually
True
True or False
Prime mover and agonist are synonymous
True
The optimum angle of pull of a muscle is generally parallel to the long axis of the bone
`Flase
True or False Tipping the head back, as in looking up at the sky, is an example of a first-class lever
True
Wrinkling the forehead vertically
Corrugator supercilii
Grating the teeth during mastication
Pterygoids
Smiling
Buccinator
Raising the eyebrows
Epicranius
Flexing the head
Strenocleidomastoid
Closing the eyes
Orbicularis oculi
True or False
The external oblique compresses the abdomen
True
True or False
The rectus abdominis flexes the trunk
True
True or False
The levator ani closes the anal canal
False
True or False
The external intercostals function to elevate the ribs
True
True or False
The coccygeus muscles and levator ani form most of the pelvic floor
True
All of the following are rotatir cuff muscles except:
a) deltoid
b) infraspinatus
c) supraspinatus
d) teres minor
deltoid
The muscle that shrugs the shoulders is the:
a) sternocleidomastoid
b) deltoid
c) trapezius
d) pectoralis minor
Trapezius
The posterior arm muscle that extends the forearm is the:
a) triceps brachii
b) triceps surae
c) brachialis
d) biceps brachii
triceps brachii
The olecranon process of the ulna is a site of insertion for the:
a) biceps brachii
b) brachialis
c) brachioradialis
d) triceps brachii
Triceps brachii
True or False
Intronsic muscles of the hand originate on the forearm and insert on the metacarpals
False
True or False
Carpal tunnel syndrome affects the median nerve
True
True or False
The deltoid is a good example of a multifunctional muscle
True
True or False
The pectorialis major flexes the upper arm
True
True or False
The biceps brachii is an extensor muscle
False
The muscles of quadriceps femoris include all of the following except:
a) vastus intermedius
b) vastus medialis
c) vastus lateralis
d) vastus femoris
vastus femoris
The anterior superior iliac spine is the site of origin for the:
a) sartorius
b) rectus femoris
c) gracilis
d) iliacus
sartorius
A common site for intramuscular injections is the:
a) gluteus maximus
b) gluteus minimus
c) gluteus medius
d) tensor fasciae latae
Gluteus minimus
Plantar flexion of the foot is achieved by the:
a) tibialis anterior
b) tibialis posterior
c) peroneus brevis
d) soleus
soleus
The muscles of the hamstrings include all of the following except the:
a) iliopsoas
b) semitendonosus
c) semimembranosus
d) biceps femoris
iliopsoas
True or False
The achilles tendon is common to both the gastocnemius and soleus
True
True or False
The iliopsoas is composed solely of the psoas major and the iliacus
False
True or False
The vastus intermedius originates on the posterior surface of the femur
False
