Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anat & Phys > Muscular System > Flashcards

Muscular System Flashcards

1
Q

Synergists

A

Muscles that work together to cause a movement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Prime Mover

A

The muscle that plays the primary role

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Antagonist

A

Muscles that opposes a movement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Flexion

A

Movement in the anterior or ventral direction
Decreasing the angle of a joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Extension

A

Movement in the posterior or dorsal direction
Increasing the angle of a joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Plantarflexion

A

Moving the distal part of the foot inferiorly
“Flexion of the foot”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Dorsiflexion

A

Moving the distal part of the foot superiorly
“Extension of the foot”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Abduction

A

Movement away from the midline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Adduction

A

Movement toward the midline

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Rotation

A

Turning around the long axis

Shaking head “no”

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Pronation

A

Rotating the forearm so palm is down (When forearm is flexed)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Supination

A

Rotating the forearm so palm is up (When forearm is flexed)

Hold a cup of soup

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Eversion

A

Plantar surface (bottom of foot) faces laterally

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Inversion

A

Plantar surface faces medially

96% of all ankle sprains are inversion sprains

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Protraction

A

Movement Anteriorly

Gliding mandible/head forward

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Retraction

A

Movement posteriorly

Gliding Mandible/head back

17
Q

Elevation

A

Movement Superiorly

18
Q

Depression

A

Movement Inferiorly

19
Q

Excursion

A

Movement to the side

Moving mandible from one side to another

20
Q

Circumduction

A

Free movement in a cone shape with the joint as the apex of the cone

Example: shoulde joint

21
Q

Opposition

A

Unique movement of the thumb touching another digit

22
Q

Reposition

A

Returning the digits to the anatomical position after opposition

23
Q

Sarcomere

A

The basic Functional unit of muscle
Draw it

24
Q

Structural and Functional Hierarchy of Muscle

A

Myofilaments - actin and myosin filaments
Myofibrils - bundles of myofilaments
Myo fiber - bundles of myofibrils
Muscle Cell (Sacroplasmic reticulum)
Sorrounded by endomysium
Myofascicle - bundles of myofibers
sorrounded by a perimysium
Muscle - Bundles of myofascicles
Sorrounded by epimysium
Sorrounded by fascia

25
Q

Sliding Filament Theory

A
  1. Action Potential arrives at the neuromuscular junction
  2. Ca2+ released from sarcoplasmic reticulum
  3. Ca2+ bind to Troponin
  4. Tropomyosin slides into actin grooves, exposing binding sites.
  5. Myosin heads bind to binding sites
  6. Myosin heads perform “Power Stroke” pulling actin and using ATP
  7. New ATP comes to release myosin head from actin
  8. If Ca2+ is still present, repeat steps 3-7
26
Q

Isotonic Contraction

A

Muscle Length Decreases, while tension stays constant

27
Q

Isometric Contraction

A

Muscle tension increases, while muscle length remains constant.

28
Q

Motor Unit

A

One neuron and all the muscle cells it innervates

29
Q

Phases of Muscle Contractions

A

DRAW THE CHART

30
Q

Tetanus

A

Build up of Ca2+ in a muscle resulting in a sustained muscle contraction

31
Q

Action, Origin, and Insertion

Trapezius

A

Action - Elevate, detract, or rotate scapula upwards. Elevate Clavicle. Extend Neck
Origin - Occipital Bone, Ligamentum Nuchae, Spinous process of thoracic vertebrae
Insertion - Acromion, Scapular Spine

32
Q

Action, Origin, and Insertion

Deltoid

A

Action - Abduction of shoulder. flexion and medial rotation. Extension and lateral rotation
Origin - Clavicle, Scapula
Insertion - Deltoid Tuberosity of Humerus

33
Q

Action, Origin, and Insertion

Pectoralis Major

A

Action - Flexion, adduction, and medial rotation of shoulder
Origin - Cartilages of Ribs 2-6, Body of Sternum, Inferior Medial portion of Clavicle
Insertion -Crest of greater tubercle

Anat & Phys (14 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions