A&P 1 101 Module 5 exam 5 Muscular system.
Question 1
2 / 2 pts
There are three types of muscle tissue found in the body. Correct!
True False
Question 2
2 / 2 pts
Smooth and cardiac muscle tissue are both unde
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A&P 1 101 Module 5 exam 5 Muscular system.
Question 1
2 / 2 pts
There are three types of muscle tissue found in the 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 musculocutaneous nerve is part of the central nervous system.
True Correct!
False
False- this is a peripheral nerve
Question 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:
It connects 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:
It is a 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 questions:
What is the name of the thick myofilament? Your Answer:
Mayosin
Myosin
Question 10
2 / 2 pts
Answer the following short-answer question:
What must occur for a muscle contraction to stop? Your Answer:
Usually stops when the nerve impulses no longer stimulates the muscle fiber. Calcium ions are pumped back into the saroplasmic reticulum by active transport.
Calcium ions must be pumped back into the sarcoplasmic reticulum
Question 11
10 / 10 pts
Label the following five muscles:
A:
D:
F:
H:
I:
Your Answer:
A-Frontalis
D-Orbicularis oculi
F-Zygomaticus minor
H-Risorius I-masseter
A: Frontalis/ occipitofrontalis D: Orbicularis Oris
F: Zygomaticus minor H: Risorius
I: Masseter
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 205 2-Median nerve
3-Mid lateral surface ofradius 4-pronation
5-median nerve
6 intertrochanteric line of femur 7 knee extension
8 lateral, distal fibula
9 lateral side of the 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 cheeks
C. 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)
Scalenes Question 15
2 / 2 pts
A person sustained a back injury to the muscle group closest to the spine. What muscle group was injured?
Longissimus
Correct!
Spinalis Sternocleidomastoid
Iliocostalis
Rectus abdominis Question 16
0 / 2 pts
True or False: When a muscle contracts, the M lines within a sarcomere come closer together towards the Z line.
You Answered
True
Correct Answer
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? Correct!
Gastrocnemius Quadriceps Biceps femoris
Tibialis anterior
Question 19
2 / 2 pts
When rectus femoris contracts, which bone is pulled anteriorly by this muscle?
Femur Correct!
Tibia Ilium
Ulna 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 ? Correct!
psoas major, hip flexion
psoas major, hip extension
iliacus, trunk flexion
iliacus, trunk extension Question 22
2 / 2 pts
When superior gemellus contracts, what action(s) will not occur at the hip?
A. Lateral rotation
B. Internal rotation
C. Adduction
D. Extension
E. Flexion
F. A&D Correct!
G. B&E
Question 23
10 / 10 pts
Use the figure answer the following five questions:
1. Which muscle has origins on both the clavicle and scapula? (specify letter on diagram with the name of the muscle for full credit)
2. Which muscle is innervated by the thoracodorsal nerve? (specify letter on diagram with the name of the muscle for full credit)
3. What is the name of muscle D?
4. What is the innervation of muscle D?
5. What is the insertion of muscle E?
Your Answer:
1-A - Deltoid muscle
2- H- Latissimus Dorsi 3-Infraspinatus
4- Suprascapular nerve
5- Greater tubercle of humerus
1. A (Deltoid)
2. H or I (Lats)
3. Infraspinatus
4. Suprascapular nerve
5. Intertubercular groove of humerus (Teres major)
Question 24
10 / 10 pts
Use the figure to label the following six muscles: (Viewed anteriorly)
A:
B:
C:
D:
E:
F:
Your Answer:
A-Flexor carpi radialis
B - flexor digitorum superficialis C - palmaris longus
D - flexor carpi ulnaris E- flexor pollicis longus
F - flexor digitorum profundus
A: Flexor carpi radialis
B: Flexor digitorum superficialis C: Palmaris longus
D: Flexor Carpi Ulnaris E: Flexor pollicis longus
F: Flexor digitorum profundus
Question 25
10 / 10 pts
Use the figure to label the following six muscles:
D:
E:
F:
G:
H:
I:
Your Answer:
D-preneus longus
E-soleus
F-Tibialis posterior
G-flexor digitorum longus
H-flexor hallucis longus I-peroneus brevis
D: Peroneus (fibularis) longus E: Soleus
F: Tibialis posterior
G: Flexor digitorum longus H: Flexor hallucis longus
I: Peroneus (fibularis) brevis
Question 26
10 / 10 pts
Answer the following essay question:
Describe what is meant by muscle fiber “cross-bridges”. What occurs to enable movement of the cross-bridges?
Your Answer:
cross bridges occur when calcium ions are present and this causes portions of the myosin filaments to bend backwards and attach to actin filaments. After that, the cross bridges bend forward and the actin filaments is pulled along. After that, the cross bridges attach and detach 50- 100 times as the thin filaments are pulled to the center of sarcomere. ADP is needed for myosin cross bridges to pull the actin filaments.
In the presence of calcium ions, portions of a myosin filament called cross-bridges bend backward and attach to an actin filament. After attaching to the actin filament, the cross- bridges bend forward, and the actin filament is pulled along. The cross-bridges attach and detach some fifty to 100 times as the thin filaments are pulled to the center of a sarcomere. ATP is needed on a cellular level for the myosin to pull actin along.
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