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Flashcards in Test #2 Deck (32)
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0

Among the choices listed, which of the following synovial joint types (configurations) allows the most freedom of movement?
a) hindge
b) saddle
c) plane
d) pivot

B

1

A synchondrosis would be categorized structurally and functionally as what type of articulation?
a) cartilaginous synarthrosis
b) fibrous amphiarthrosis
c) monoaxial synovial
d) fibrous diarthrosis
e) none of the above

A

2

joint movement that involves increasing the angle between the articulating bones is called...
a) protraction
b) flextion
c) adduction
d) supination
e) none of the above

E answer is extension

3

the movement that occurs at the ankle joint when you point your toes downward (or stand on tippy-toes) is called..
a) circumflexion
b) dorsiflexion
c) Plantar flexion
d) pronation
e) circumcision

C

4

The shoulder includes more than one actual articulation. Which of the following is NOT a part of the shoulder?
A) claviculohumeral joint
b) Acromioclavicular joint
c) the glenohumeral joint
d) all three are part of the shoulder complex

A

5

a herniated vertebral disc occurs when a misalignment of 2 vertebral bodies is "squished" out of the disk (called the ___) like jelly from a doughnut
a) nucleus fibrous
b) nucleus pulposus
c) annulus fibrous
d) annulus pulposus
e) none of the above

B

6

Many sports-related injuries of the knee involve sideways impact which causes the knee to buckle inward (medially). Which connective tissue is most often damaged during these injuries?
a) lateral meniscus
b) posterior cruciate ligament
c) medial collateral ligament
d) all 3 of these are usually injured with this impact

C

7

evaluate the following statement "smooth muscle cells have a spindle or tapered shape with single, central nucleus and no striations throughout the cell"
a) true
b) false

A) true

8

The connective tissue layer that surrounds a muscle fasicle is called the_____
a) myofibril
b) perimysium
c) myolemma
d) endomysium
e) none of the above

B

9

Which of the following is an accurate description of a TYPE 1 muscle fiber?
a) good at anaerobic metabolism
b) large size
c) very resistant to fatihue
d) strong contraction force
e) all of the above are accurate description

C

10

The function of Sarcoplasmic reticulum is to...

Store and release Ca2+ ions

11

Which of the following molecules is not part of the thin filament of a myofibril?
a) actin
b) tropomyosin
c) myosin
d) troponin
e) all of them are part of a thin filament

C

12

Cardiac muscle cells are connected to one another via specialized structures called __ which contain ion channels that allows the spread of electrical current throughout the heart's musculature?
a) striated junctions
b) end plates
c) z-lines
d) interclated discs
e) none of the above

D

13

A sarcomere is defined as
a) all of the myofliaments held together by the m-line
b) the system of membranes that surrounds each myofibrils and store calcium
c) the parts of a myofibril (thick and thick filaments) found between two Z-lines)
d)a bundle of muscle cells surrounds be perimysium
e) none of the above statement are correct

C

14

Compared to skeletal muscle cells, which of the following is lacking in smooth muscle?
a) sarcomeres
b) transverse tubles
c) troponin
d) sarcoplasmic reticulum
e) all of the above are lacking in smooth muscle cells

E

15

based on the arrangement of fibers relative to the common tendon, the skeletal muscle shown to the right (in the calves) is described as a __ type of muscle?
a) convergent
b) multipennate
c) parallel
d) unipennate
e) none of the above

E - bipennate

16

during flexion of the "leg" at the knee , which of the following muscles would be considered an antagonist muscle?
a) biceps femoris
b) gluteus maximus
c) pectineus
d) vastus lateralis
e) none of the above

D

17

One motor neuron along with all of the muscle cells it controls is called a/an..
a) muscular junction
b) neural fascicle
c) motor unit
d) terminal cisternum
e) none of the above

C

18

What is the action of the Frontal belly on the occipitofrontalis?

to raise the eyebrowns

19

What is the origin of the masseter?

zygomatic arch

20

Which of the following is NOT involved in movement of the mandible during mastication (chewing)
a) medial pterygoid
b) masseter
c) temporalis
d) all of the above move the manible when chewing

D

21

Which of the following muscles is NOT used in the process of breathing?
a) serratus posterior inferior
b) internal intercostals
c) diaphragm
d) serratus anterior
e) all are used for breathing

D

22

What is the insertion of the rectus abdominus?

Xiphoid process and ribs 5-7

23

what is the bilateral action of the external oblique?

flexion of the vertebral column

24

Which of the following muscles acts to protect (abduct) the scapula?
a) trapezius
b) serratus anterior
c) levator scapula
d) rhomboideus major
e) all of them protract the scapula

B

25

Which of the following is one action of the latissimus dorsi?
a) extension of the arm at the glenohumeral joint
b) adduction of the arm at the glenohumeral joint
c) medial rotation of the arm at the glenohumeral joint
d) all of the above are actions of this muscle
e) none of the above are actions of this muscle?

D

26

The insertion of the biceps brachii is on the __?

the radial tuberosity (and bicipital aponuerosis)

27

How many muscles are involved in supination of the forearm?

two

28

What is the origin of the rectus femoris?

anterior inferior iliac spine , sacrum, coccyx

29

What is the insertion of the gluteus maximus?

ilium (iliac crest), sacrum, coccyx

30

the origin of the gastrocnemius is ....

medial and lateral condyles of the femur

31

What is the action of the Tibialis Anterior?

Dorsiflexion of the ankle