DPT 625: Biomechanics and Kinesiology Flashcards Preview

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Flashcards in DPT 625: Biomechanics and Kinesiology Deck (126)
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1

Branch of mechanics that describes effect of forces and torque on body

a. Kinetics
b. Kinematics

A

2

Branch of mechanics that describes motion of a body, without regard to forces or torques hat may produce motion

a. Kinetics
b. Kinematics

B

3

True or False

The position of max congruency of articular surfaces is referred to as the joints close-packed position

True

4

What does the sagittal plane run parallel to?

the sagittal suture of the skull, dividing the body into left and right sections

5

What does the frontal plane run parallel to?

the coronal suture of the skull, dividing the body into front and back sections

6

What does the horizontal (transverse) plane run parallel to?

the horizon and divides the body into upper and lower sections

7

True or False

Concentric activation occurs as a muscle produces a pulling force as it is being elongated by another – more dominant force

False

8

True or False

The agonist is the muscle or muscle group that is most directly related to the initiation and execution of a particular movement

True

9

True or False

A first class lever will always have its axis of rotation (AOR) at one end of a bone and the internal force possesses greater leverage than the external force

False

10

True or False

Slide represents a singular point on one articulating surface contacting multiple points on another articular surface

True

11

True or False

Ratio of stress caused by an applied strain in a ligament is referred to as stiffness

True

12

The movement of flexion/extension occurs in the sagittal plane on what axis?

ML axis

13

Elevation of the SC joint involves simultaneous _______ roll and ______ slide.

a. Inferior; Superior
b. Superior; Inferior
c. Superior; Superior
d. None of the Above

B

14

The medial end of the clavicle appears _____ in the longitudinal diameter and _____ in the transverse diameter.

a. Concave; Concave
b. Convex; Concave
c. Concave; Convex
d. Convex; Convex

B

15

True or False

Wolff’s law states that “bone is laid down in areas of low stress and reabsorbed in areas of high stress.”

False

16

Scapulothoracic elevation involves a summation of ______ at the sternoclavicular joint and _____ at the acromioclavicular joint.

a. Elevation; Depression
b. Depression; Downward
c. Elevation; Upward
d. Depression; Upward

A

17

Scapulothoracic upward rotation involves a summation of ______ at the sternoclavicular joint and _____ at the acromioclavicular joint.

a. Depression; Downward
b. Elevation; Upward
c. Elevation; Downward
d. Elevation; Upward

D

18

True or False

The Henneman Size Principle states that larger neurons are generally recruited before smaller motor neurons.

False

19

Retraction of the sternoclavicular joint involves simultaneous _____ roll and _____ slide.

a. Anterior; Anterior
b. Posterior; Posterior
c. Posterior; Anterior
d. Anterior; Posterior

B

20

The movement of the abduction/adduction occurs in the _____ plane on the ____ axis of rotation.

a. Sagittal; anterior-posterior
b. Horizontal; vertical
c. Frontal; anterior-posterior
d. Sagittal; medial-lateral

C

21

True or False

During flexion movement at the humeroradial joint, the fovea of the radius rolls and slides in opposite direction across the convexity of the capitulum

False (roll/slide in the same direction)

22

With full shoulder extension defined as 0⁰, the functional range of motion at the elbow for flexion and extension ranges from _______.

a. 30⁰ to 130⁰
b. 75⁰ to 100⁰
c. 0⁰ to 180⁰
d. -5⁰ to 145⁰

A

23

The rotator cuff muscles of the shoulder include:

a. Coracobrachialis
b. Biceps brachii (long head)
c. Teres minor
d. Middle deltoid
e. All of the above

C

24

The _______ muscle drives the superior roll of the humeral head during abduction at the glenohumeral joint

a. Infraspinatus
b. Serratus anterior
c. Supraspinatus
d. Lower trapezius

C

25

Please match the following functions at the scapulothoracic joint with the corresponding correct muscle.

Retractor: _____
Protractor: _____
Upward rotator: _____
Depressor: _____
Downward rotator: _____
Elevator: ____
• Upper trapezius
• Middle trapezius
• Levator Scpulae
• Pectoralis minor
• Subclavius
• Serratus anterior

• Retractor: Middle trapezius
• Protractor: Serratus anterior
• Upward rotator: Upper trapezius
• Depressor: Subclavius
• Downward rotator: Pectoralis minor
• Elevator: Levator Scapule

26

Which of the following tissues may become depressed between the humeral head and coracoacromial arch?

a. Superior GH joint capsule
b. Subacromial bursa
c. Supraspinatus tendon
d. All of Above

D

27

True or False

Glenohumeral joint dislocations most commonly occur in the superior direction

False

28

The inferior glenohumeral ligament is comprised of the following

a. Anterior band
b. Axillary pouch
c. Posterior band
d. All of Above
e. None of the above

D

29

True or False

The rotator cuff muscles of the shoulder are passive stabilizers of glenohumeral joint arthrokinematics

False

30

Vigorous contraction of the ________ muscle during full horizontal extension of the shoulder requires the scapula to be firmly stabilized by the _______ muscle.

a. Posterior deltoid; lower trapezius
b. Anterior deltoid; middle trapezius
c. Posterior deltoid; upper trapezius
d. middle deltoid lower trapezius

A