M5: Exam- Requires Respondus LockDown
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Question 1
2 / 2 pts
There are three types of muscle tissue found in the
... [Show More] body.
Correct!
True
False
Question 2
2 / 2 pts
Smooth and cardiac muscle tissue are both under voluntary control.
True
Correct!
False
Question 3
2 / 2 pts
The lumbar plexus is part of the central nervous system.
True
Correct!
False
False- this is a peripheral nerveQuestion 4
2 / 2 pts
A motor signal is a signal that is sent from a muscle to the central nervous system.
True
Correct!
False
False- this is sensory input
Question 5
2 / 2 pts
The cervical plexus contains nerves that innervate the thigh.
True
Correct!
False
Question 6
2 / 2 pts
Answer the following short-answer question:
Ligaments connect which types of tissue?
Your Answer:
Ligaments connect bone to bone.
Connect bone to bone
Question 7
2 / 2 pts
Answer the following short-answer question:Acetylcholine is what type of substance?
Your Answer:
Neurotransmitter.
Neurotransmitter
Question 8
2 / 2 pts
Answer the following short-answer question:
During a muscle contraction which protein myofilament is pulled along?
Your Answer:
Actin.
Actin
Question 9
2 / 2 pts
Answer the following short-answer question:
What is the name of the thin myofilament?
Your Answer:
Actin.
Actin
Question 10
2 / 2 pts
Answer the following short-answer question:
What must occur for a muscle contraction to stop?
Your Answer:
When nerve impulses no longer stimulate the muscle fiber, contraction stops. Calcium
ions return to sarcoplasmic reticulum and the muscle can relax.Calcium ions must be pumped back into the sarcoplasmic reticulum
Question 11
10 / 10 pts
Label the following five muscles:
B: _____________
C: _____________
E: _____________
G: _____________
J: ______________Your Answer:
B: Temporalis (L)
C: Orbicularis Oculi (R)
E: Zygomaticus Major
G: Buccinator (deep)
J: Depressor labii inferioris
B: Temporalis
C: Orbicularis oculi
E: Zygomaticus major
G: Buccinator
J: Depressor labii inferioris
Question 12
10 / 10 pts
Fill in the following muscle chart (10 blank spaces):
Muscle Origin Insertion Action Innervation
Flexor digitorum
superficialis ------- ---------- 1.______ 2._________
Pronator Teres ------- 3._______ 4._______ 5._________
Vastus Medialis 6._____ ---------- 7.________ --------------
Peroneus Brevis 8.______ 9._______ ----------- 10.__________
1. [answer1]
2. [answer2]
3. [answer3]
4. [answer4]
5. [answer5]
6. [answer6]
7. [answer7]
8. [answer8]
9. [answer9]
10. [answer10]Your Answer:
1- Flexion of the wrist and digits 2-5 (middle and proximal phalanx)
2- Median nerve
3-Mid-lateral surface of radius
4- Pronation
5- Median nerve
6- Intertrochanteric line of femur
7- Knee extension
8- Lateral, distal fibula
9- Lateral side of 5th metatarsal
10- Superficial peroneal nerve
1. Flexion of the wrist and digits 2-5
2. Median nerve
3. Mid-lateral surface of radius
4. Pronation
5. Median nerve
6. Intertrochanteric line of femur
7. Knee extension
8. Lateral, distal fibula
9. Lateral side of 5th metatarsal
10. Superficial peroneal nerve
Question 13
2 / 2 pts
Your patient sustained an injury to their facial nerve (CN VII). Which actions would be
impaired?
A. Extend head/neck
B. Compress cheeksC. Grin/grimace
D. Elevate mandible
E. A&D
Correct!
F. B&C
F.B &C (Buccinator & risorius)
Question 14
2 / 2 pts
Your patient is having difficulty when asked to bring his chin to his chest. He is also
having difficulty turning his face from side to side. What muscle is most likely impaired?
Thyrohyoid
Semispinalis capitis
Splenius Capitis
Correct!
Sternocleidomastoid
(Bilateral neck flexion, unilateral turns face)
ScalenesQuestion 15
2 / 2 pts
Your patient is having difficulty when asked to bend his spine backward. What muscle is
involved?
Correct!
Spinalis thoracis
(Extensor of the vertebral column)
Scalenes
External oblique
Internal oblique
Rectus abdominis
Question 16
2 / 2 pts
True or False: When a muscle contracts, the Z lines within a sarcomere come closer
together towards the M line.
Correct!
True
False
Question 17
2 / 2 pts
True or False: The A band contains thin filaments.
Correct!True
(A band contains thick filaments and thin filaments)
False
Question 18
2 / 2 pts
Which muscle contracts to enable the main effort required to stand on your toes?
Biceps femoris
Quadriceps
Correct!
Gastrocnemius
Tibialis anterior
Question 19
2 / 2 pts
When gluteus maximus contracts, which bone is pulled posteriorly by this muscle?
Tibia
Ilium
UlnaCorrect!
Femur
Question 20
2 / 2 pts
When extensor digitorum contracts, what action(s) occurs?
A. Elbow extension
B. Wrist extension
C. Extension of digit 1
D. Extension of digits 2-5
E. A&C
Correct!
F. B&D
Question 21
2 / 2 pts
Contraction of _______ results in _______?
obturator externus, spine flexion
obturator externus, spine extensionCorrect!
iliacus, hip flexion
iliacus, hip extension
Question 22
2 / 2 pts
When piriformis contracts, what action(s) will not occur at the hip?
A. Internal rotation
B. Lateral rotation
C. Adduction
D. Flexion
E. Extension
Correct!
F. A&D
G. B&E
Question 23
10 / 10 pts
Use the figure answer the following five questions:1. Which muscle is the prime mover of adduction, flexion and inward rotation of the
humerus? (specify letter on diagram with the name of the muscle for full credit)
2. Which muscle is innervated by the musculocutaneous nerve? (specify letter on
diagram with the name of the muscle for full credit)
3. What is the name of muscle C?
4. What is the innervation of muscle C?
5. What is the origin of muscle E?
Your Answer:
1- B(Pectoralis Major)\
2- F or G (Coracobrachialis)
3- Supraspinatus
4- Suprascapular nerve
5- Inferior angle of scapula (Teres major)
1. B (Pectoralis Major)
2. F or G (Coracobrachialis)
3. Supraspinatus
4. Suprascapular nerve5. Inferior angle of scapula
(Teres major)
Question 24
10 / 10 pts
Use the figure to label the following six muscles: (Viewed posteriorly)
A: ______________
C: ______________
D: ______________
F: _______________
H: ______________
I: _______________
Your Answer:
A: Extensor carpi radialis longus, R
C: Extensor digitorumD: Extensor carpi ulnaris
F: Abductor pollicis longus
H: Extensor indicis
I: Extensor pollicis brevis
A: Extensor carpi radialis longus
C: Extensor digitorum
D: Extensor Carpi Ulnaris
F: Abductor pollicis longus
H: Extensor indicis
I: Extensor pollicis brevis
Question 25
10 / 10 pts
Use the figure to label the following six muscles:A: ______________
B: ______________
C: ______________
G: ______________
H: ______________
I: _______________
Your Answer:
A: Gastrocnemius
B: Tibialis anterior
C: Extensor digitorum longusG: Tibialis posterior
H: Flexor digitorum longus
I: Flexor hallucis longus
A: Gastrocnemius
B: Tibialis anterior
C: Extensor digitorum longus
G: Tibialis posterior
H: Flexor digitorum longus
I: Flexor hallucis longus
Question 26
10 / 10 pts
Answer the following essay question:
Describe how acetylcholine, sodium ions and calcium ions work together to enable a
muscle contraction.
Your Answer:
In order to happen a muscle contraction, firstly a nerve signal is a sent to the muscle
fibers. And Acetylcholine releases from a motor nerve ending. Acetylcholine binds to the
muscle cell and triggers the sodium channels to open and release sodium ions. Sodium
ions go to the inside the cell and it will trigger an action potantial that eventually reaches
the sarcoplasmic reticulum. The presence of sodium causes calcium ions to be
released. Calcium ions relase from sarcoplamic reticulum of muscle cell and make a
muscle contraction to happen.
Acetylcholine (a special chemical called a neurotransmitter) is released from a
motor nerve at the neuromuscular junction (or NMJ).
Acetylcholine binds to receptors on the muscle fiber that cause sodium channels
to open. Sodium ions rush inside the cell, triggering an action potential which
eventually reaches the sarcoplasmic reticulum.
Calcium ions are released from the sarcoplasmic reticulum of the muscle cell,
causing a muscle contraction to occur.
Quiz Score: 100 out of 100 [Show Less]