WCU Anatomy Midterm
Which of the following extends the elbow?-Correct Answer-triceps brachii
When climbing stairs, which muscle or muscle group flexes your knee?-Correct Answer-
hamstring group
This type of muscle makes up the walls of hollow organs, such as the stomach and
uterus-Correct Answer-smooth muscle
Which of the following is NOT a muscle of the rotator cuff?
subscapularis
teres minor
infraspinatus
supraspinator
teres major-Correct Answer-teres major
The muscle used to depress the tongue is the
a. Mylohyoid
b. Superior longitudinal
c. Genioglossus
d. Hyoglossus-Correct Answer-d. hyoglossus
Contractions of these muscles are under voluntary control-Correct Answer-skeletal
muscle
A muscle fascicle is-Correct Answer-a bundle of cells
In striates muscle, the I band is where
a) thin filaments occur
b) thick filaments occur-Correct Answer-a) thin filaments occur
Which region of the sarcomere does not change in length during contraction?-Correct
Answer-A band
The deeper muscles of the anterior abdominal wall is the-Correct Answer-transversus
abdominis
,Which of the following correctly defines a triad of the sarcomere?
a) actin, troponin, and tropomyosin
b) a T tubule and two adjacent terminal cisterns
c) actin, myosin, and titin
d) an axon terminal, synaptic cleft, and sacrolema-Correct Answer-b) a T tubule and two
adjacent terminal cisterns
This type of muscle attaches bone to bone, but may also attach to skin, cartilage, fascia
or a raphe.-Correct Answer-skeletal muscle
The sarcoplasmic reticulum (SR) stores-Correct Answer-calcium
Which group is an antagonist to the hamstrings group?-Correct Answer-quadriceps
femoris group
This type of muscle is found in the heart-Correct Answer-cardiac muscle
The prime movers of jaw closure and biting are the
A) temporalis and buccinator muscles.
B) masseter and temporalis muscles.
C) buccinator and masseter muscles.
D) temporalis and lateral pterygoid muscles.-Correct Answer-B) masseter and
temporalis muscles
In skeletal muscle fibers, which band or zone contains both thick and tin myofilaments-
Correct Answer-A
Sarcoplasmic reticulum lies
A) between fibers but in myofilaments.
B) between myofibrils but in fibers.
C) between fascicles but outside fibers.
D) between muscles but in myofilaments.-Correct Answer-B) between myofibrils but in
fibers
Triceps brachii and biceps brachii perform opposing actions and are classified as:-
Correct Answer-antagonists
A cell of this type of muscle is striated and can be uninucleated or binucleated-Correct
Answer-cardial muscle
, Which of the following muscles is NOT associated with the mouth?
A)orbicularis oris
B)depressor anguli oris
C)orbicularis oculi
D)depressor labii inferioris-Correct Answer-C)orbicularis occuli
A nursing infant develops a powerful sucking muscle that adults also use while
whistling. This muscle is the-Correct Answer-buccinator
This type of muscle, along with cardiac muscle, is called visceral muscle.-Correct
Answer-smooth muscle
When climbing stairs, which muscles plantar flex your foot?
Lateral malleolus
Inferior peroneal retinaculum
5th metatarsal bone
gastrocnemius and soleus-Correct Answer-gastrocnemius and soleus
A muscle that dorsiflexes the foot is the:
Fibula
Tibialis anterior
Achilles tendon
Extensor hallucis tendon-Correct Answer-tibialis anterior
In striated muscle cells, which of these structures stores calcium ions that trigger
contraction?
A) the internal surface of the plasma membrane
B) the terminal cisterns
C) T tubules
D) the myofibrils-Correct Answer-B) the terminal cisterns
Both cardiac muscle and this type of muscle are called involuntary.-Correct Answer-
smooth muscle
Which of the following muscles does NOT adduct the thigh?
A. pectineus
B. rectus femoris
C. gracilis
D. adductor magnus-Correct Answer-B. rectus femoris
Which of the following extends the elbow?-Correct Answer-triceps brachii
When climbing stairs, which muscle or muscle group flexes your knee?-Correct Answer-
hamstring group
This type of muscle makes up the walls of hollow organs, such as the stomach and
uterus-Correct Answer-smooth muscle
Which of the following is NOT a muscle of the rotator cuff?
subscapularis
teres minor
infraspinatus
supraspinator
teres major-Correct Answer-teres major
The muscle used to depress the tongue is the
a. Mylohyoid
b. Superior longitudinal
c. Genioglossus
d. Hyoglossus-Correct Answer-d. hyoglossus
Contractions of these muscles are under voluntary control-Correct Answer-skeletal
muscle
A muscle fascicle is-Correct Answer-a bundle of cells
In striates muscle, the I band is where
a) thin filaments occur
b) thick filaments occur-Correct Answer-a) thin filaments occur
Which region of the sarcomere does not change in length during contraction?-Correct
Answer-A band
The deeper muscles of the anterior abdominal wall is the-Correct Answer-transversus
abdominis
,Which of the following correctly defines a triad of the sarcomere?
a) actin, troponin, and tropomyosin
b) a T tubule and two adjacent terminal cisterns
c) actin, myosin, and titin
d) an axon terminal, synaptic cleft, and sacrolema-Correct Answer-b) a T tubule and two
adjacent terminal cisterns
This type of muscle attaches bone to bone, but may also attach to skin, cartilage, fascia
or a raphe.-Correct Answer-skeletal muscle
The sarcoplasmic reticulum (SR) stores-Correct Answer-calcium
Which group is an antagonist to the hamstrings group?-Correct Answer-quadriceps
femoris group
This type of muscle is found in the heart-Correct Answer-cardiac muscle
The prime movers of jaw closure and biting are the
A) temporalis and buccinator muscles.
B) masseter and temporalis muscles.
C) buccinator and masseter muscles.
D) temporalis and lateral pterygoid muscles.-Correct Answer-B) masseter and
temporalis muscles
In skeletal muscle fibers, which band or zone contains both thick and tin myofilaments-
Correct Answer-A
Sarcoplasmic reticulum lies
A) between fibers but in myofilaments.
B) between myofibrils but in fibers.
C) between fascicles but outside fibers.
D) between muscles but in myofilaments.-Correct Answer-B) between myofibrils but in
fibers
Triceps brachii and biceps brachii perform opposing actions and are classified as:-
Correct Answer-antagonists
A cell of this type of muscle is striated and can be uninucleated or binucleated-Correct
Answer-cardial muscle
, Which of the following muscles is NOT associated with the mouth?
A)orbicularis oris
B)depressor anguli oris
C)orbicularis oculi
D)depressor labii inferioris-Correct Answer-C)orbicularis occuli
A nursing infant develops a powerful sucking muscle that adults also use while
whistling. This muscle is the-Correct Answer-buccinator
This type of muscle, along with cardiac muscle, is called visceral muscle.-Correct
Answer-smooth muscle
When climbing stairs, which muscles plantar flex your foot?
Lateral malleolus
Inferior peroneal retinaculum
5th metatarsal bone
gastrocnemius and soleus-Correct Answer-gastrocnemius and soleus
A muscle that dorsiflexes the foot is the:
Fibula
Tibialis anterior
Achilles tendon
Extensor hallucis tendon-Correct Answer-tibialis anterior
In striated muscle cells, which of these structures stores calcium ions that trigger
contraction?
A) the internal surface of the plasma membrane
B) the terminal cisterns
C) T tubules
D) the myofibrils-Correct Answer-B) the terminal cisterns
Both cardiac muscle and this type of muscle are called involuntary.-Correct Answer-
smooth muscle
Which of the following muscles does NOT adduct the thigh?
A. pectineus
B. rectus femoris
C. gracilis
D. adductor magnus-Correct Answer-B. rectus femoris
