Lecture #10-12 Muscular System Flashcards Preview

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Flashcards in Lecture #10-12 Muscular System Deck (52):
1

A 24-year-old man is unable to flex his right forearm at the elbow joint. Which of the following best describes the nerve likely affected in this case?

A. Radial

B. Ulnar

C. Musculocutaneous

D. Axillary E. Median

C. Musculocutaneous

2

A patient can abduct her arm no further than the 15 degree position . Which of the following muscles is most likely affected?

A. Rhomboid minor

B. Teres minor

C. Deltoid

D. Supraspinatus

E. Subscapularis

C. Deltoid

3

Which of the following actions would you ask a patient to perform in order to test the function of the trapezius muscle?

A. Push against a wall with both hands

B. Adduct the arm against resistance

C. Abduct the arm fully

D. Shrug the shoulder

E. Flex the arm fully

D. Shrug the shoulder

4

Which of the following statements about the gastronemius muscle is correct?

A. Innervated by the deep fibular nerve.

B. Dorsiflexion of the ankle joint.

C. Found in the lateral compartment of the leg.

D. Plantar flexion of the ankle joint.

E. Insertion to the foot via the pattelar tendon.

D. Plantar flexion of the ankle joint.

5

Which of following best describes the muscle that everts the foot?

A. Tibialis anterior

B. Flexor hallucis longus

C. Fibularis longus

D. Tibialis posterior

E. Flexor digitorium longus

C. Fibularis longus

6

Which of the following best describes the connective tissue covering a muscle fascicle?

A. Perichondrium

B. Perimysium

C. Endosteum

D. Epimysium

E. Endomysium

B. Perimysium

7

Which of the following muscles is not part of the rotator cuff group?

A. Teres major

B. Infraspinatus

C. Teres minor

D. Supraspinatus

E. Subscapularis

A. Teres major

8

An 23-year-old woman is asked to abduct the lower limb against the resistance provided by the physician. Which of the following muscles is tested in this exercise?

A. Pectineus

B. Gracilis

C. Semimembranosus

D. Semitendinosus

E. Gluteus medius

E. Gluteus medius

9

Which of the following best describes the muscle that closes and protrudes the lips?

A. Mentalis

B. Depressor anguli oris

C. Orbicularis oculi

D. Levator labii superioris

E. Orbicularis oris

E. Orbicularis oris

10

A 24-year-old woman is diagnosed with a laceration to the median nerve at the wrist. Which of the following best describes the muscles most likely affected in this condition?

A. Thenar

B. Dorsal interossei

C. Extensor pollicis longus

D. Hypothenar

E. Palmar interossei

A. Thenar

11

1) A skeletal muscle is composed of a number of ________, each composed of many muscle fibers bundled by connective tissue.

A) fascicles

B) myofibrils

C) muscle cells

D) myofilaments

E) sarcomeres

A) fascicles

12

What structure composed of connective tissue transmits force from contracting skeletal muscle to bone?

A) myofibril

B) fascicle

C) tendon

D) ligament

E) aponeurosis

C) tendon

13

What is the saclike membranous network that surrounds each myofibril called?

A) sarcolemma

B) sarcoplasmic reticulum

C) transverse tubule

D) nucleus

E) mitochondrion

B) sarcoplasmic reticulum

14

The fundamental repeating unit of the myofibril called a ________ gives skeletal muscle its striated appearance, and is bordered by ________.  (**Physio Question)

A) crossbridge : Z lines

B) sarcomere : M lines

C) sarcomere : I bands

D) sarcomere : Z lines

E) crossbridge : A bands

D) sarcomere : Z lines

15

Which of the following muscles that act on the thumb is not located in the thenar eminence?

a. abductor pollicis brevis

b. flexor pollicis brevis

c. opponens pollicis

d. flexor pollicis longus

e. Two of the above

d. flexor pollicis longus

16

The thenar muscles act on:

a. the wrist.

b. the thumb.

c. the little finger.

d. all fingers except the thumb.

e. the great toe.

b. the thumb.

17

During exhalation, the diaphragm:

a. contracts and flattens.

b. relaxes and flattens.

c. contracts and forms a dome.

d. relaxes and forms a dome.

e. does not contract or relax.

d. relaxes and forms a dome.

18

The action of the pectoralis major muscle is to:

a. abduct the arm and rotate the arm laterally.

b. flex, adduct, and rotate the arm medially.

c. adduct the arm and rotate the arm laterally.

d. abduct the arm and rotate the arm medially.

e. abduct and raise the arm.

b. flex, adduct, and rotate the arm medially.

19

Which of the following is part of the medial compartment of muscles that act on the femur?

a. semitendinosus

b. biceps femoris

c. rectus femoris

d. gluteus medius

e. gracilis

e. gracilis

20

Muscles of which group share a common origin on the ischium and act to extend the thigh and flex the leg?

a. gluteal muscles

b. quadriceps muscles

c. adductor muscles

d. hamstring muscles

e. peroneal muscles

d. hamstring muscles

21

8. In compartment syndrome, external or internal pressure constrictsthe structures within a compartment, resulting in damaged bloodvessels and subsequent reduction of blood supply. If the syndromeis localized to the posterior crural compartment, what function is most significantly affected?

a. flexion of the wrist

b. abduction of the pollex

c. extension of the knee joint

d. dorsiflexion of the ankle joint

e. plantar flexion of the ankle joint

e. plantar flexion of the ankle joint

22

The _____________ is a dense connective tissue envelope that surrounds groups of muscles in the body.

perimysium

23

Arrange the following from largest to smallest: (1) myofibril,

(2) filament, (3) muscle fiber, (4) fascicle.

 

a. 1, 3, 2, 4

b. 3, 4, 2, 1

c. 3, 1, 4, 2

d. 4, 3, 1, 2

e. 4, 2, 3, 1

a. 1, 3, 2, 4

24

Connective tissue that separates one muscle fiber from another is the _________________ .

endomysium

25

Plate-shaped regions of dense material separating one sarcomere from the next are called __________________.

Z lines

26

23. The muscles that plantar flex the foot at the ankle joint are located in the anterior compartment of the leg.

27

presses cheeks against teeth and lips

(Choose all that apply)

(1) latissimus dorsi

(2) quadriceps femoris

(3) superior oblique

(4) buccinator

(5) trapezius

(6) external intercostals

(7) triceps brachii

(8) deltoid

(9) external oblique

(10) gluteus maximus

(4) buccinator

28

moves eyeball inferiorly and laterally, rotates eyeball medially

(Choose all that apply)

(1) latissimus dorsi

(2) quadriceps femoris

(3) superior oblique

(4) buccinator

(5) trapezius

(6) external intercostals

(7) triceps brachii

(8) deltoid

(9) external oblique

(10) gluteus maximus

(3) superior oblique

29

elevates and adducts scapula

(choose all that apply)

(1) latissimus dorsi

(2) quadriceps femoris

(3) superior oblique

(4) buccinator

(5) trapezius

(6) external intercostals

(7) triceps brachii

(8) deltoid

(9) external oblique

(10) gluteus maximus

(5) trapezius

30

extends leg at knee joint

(choose all that apply)

(1) latissimus dorsi

(2) quadriceps femoris

(3) superior oblique

(4) buccinator

(5) trapezius

(6) external intercostals

(7) triceps brachii

(8) deltoid

(9) external oblique

(10) gluteus maximus

(2) quadriceps femoris

31

extends forearm at shoulder joint

(choose all that apply)

(1) latissimus dorsi

(2) quadriceps femoris

(3) superior oblique

(4) buccinator

(5) trapezius

(6) external intercostals

(7) triceps brachii

(8) deltoid

(9) external oblique

(10) gluteus maximus

(7) triceps brachii

32

extends, adducts, and medially rotates arm at shoulder joint

(choose all that apply)

(1) latissimus dorsi

(2) quadriceps femoris

(3) superior oblique

(4) buccinator

(5) trapezius

(6) external intercostals

(7) triceps brachii

(8) deltoid

(9) external oblique

(10) gluteus maximus

(1) latissimus dorsi

33

flexes and rotates vertebral column

(choose all that apply)

(1) latissimus dorsi

(2) quadriceps femoris

(3) superior oblique

(4) buccinator

(5) trapezius

(6) external intercostals

(7) triceps brachii

(8) deltoid

(9) external oblique

(10) gluteus maximus

(9) external oblique

34

extends and laterally rotatesthigh at hip joint

(choose all that apply)

(1) latissimus dorsi

(2) quadriceps femoris

(3) superior oblique

(4) buccinator

(5) trapezius

(6) external intercostals

(7) triceps brachii

(8) deltoid

(9) external oblique

(10) gluteus maximus

(10) gluteus maximus

35

abducts arm at shoulder joint

(choose all that apply)

(1) latissimus dorsi

(2) quadriceps femoris

(3) superior oblique

(4) buccinator

(5) trapezius

(6) external intercostals

(7) triceps brachii

(8) deltoid

(9) external oblique

(10) gluteus maximus

(8) deltoid

36

elevates ribs during inspiration

(choose all that apply)

(1) latissimus dorsi

(2) quadriceps femoris

(3) superior oblique

(4) buccinator

(5) trapezius

(6) external intercostals

(7) triceps brachii

(8) deltoid

(9) external oblique

(10) gluteus maximus

(6) external intercostals

37

most of the muscles of facial expression expression

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(3) facial (VII) nerve

38

muscles that move the mandible

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(6) trigeminal (V) nerve, mandibular division

39

most muscles that move the tongue

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(1) hypoglossal (XII)nerve

40

most muscles of the pharynx

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(11) vagus (X) nerve

41

muscles that move the head

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(8) accessory (XI) and cervical spinal nerves

42

muscles of the anterolateral abdominal wall

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(2) thoracic nerves 7–12

43

diaphragm

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(10) phrenic nerve

44

quadriceps femoris muscles

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(5) femoral nerve

45

muscles of the anterior compartment of the leg compartment of the leg

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(7) deep peroneal nerve

46

muscles of the lateral compartment of the leg

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(9) superficial peroneal nerve

47

muscles of the posterior compartment of the leg

Choose the best option:

(1) hypoglossal (XII) nerve

(2) thoracic nerves 7–12

(3) facial (VII) nerve

(4) tibial nerve

(5) femoral nerve

(6) trigeminal (V) nerve, mandibular division

(7) deep peroneal nerve

(8) accessory (XI) and cervical spinal nerves

(9) superficial peroneal nerve

(10) phrenic nerve

(11) vagus (X) nerv

(4) tibial nerve

48

What connects muscles to bone?

A) ligaments

B) tendons

C) cartilage

D) capillaries

E) T tubules

B) tendons

49

Relative to the triceps muscle, the biceps is its ________.

A) origin

B) insertion

C) agonist

D) antagonist

E) abductor

D) antagonist

50

The biceps cause flexion of the arm, whereas the triceps cause extension. (T/F)

True

51

Which nerves innervate the thigh?

A) cranial nerves

B) cervical nerves

C) sacral nerves

D) thoracic nerves

E) lumbar nerves

E) lumbar nerves

52