Introduction to the Musculoskeletal System Flashcards

1
Q

Axial VS Appendicular

A

Axial surrounds CNS (brain and spinal cord)- includes skill, vertebrae, ribs, sternum, sacrum, and ONLY dorsal/posterior part of pelvis

Appendicular surround appendages- includes limbs, shoulder blades, hip bones in lower aspect

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2
Q

Bone Shape Classification

A

Long, Irregular, Flat, Short

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3
Q

What is Sesamoid

A

The sesamoid bone is a short bone found within the tendons

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4
Q

What are joints?

A

Articulation-joint connection between 2 bones

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5
Q

Types of joints

A

Fibrous, Cartilaginous, Synovial

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6
Q

FIbrous Joints

A

Dense connective tissue connecting bones in close contact

SUTURE bones in skull, GOMPHOSIS teeth in school, SYNDESMOSIS in forearm and leg

-generally, no movement

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7
Q

Cartilaginous Joints

A

Cartilage (hyaline, fibrocartilage) between bones

SYNCHONDROSIS- growth plate
SYMPHYSIS- intervertebral disc, pubic symphysis

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8
Q

Synovial Joints

A
Most common joints allowing free movement 
(PIC)
1. Articular cartilage
2. Synovial Cavity
3. Synovial fluid
4. Joint Capsule
5. Reinforcing ligaments
6. Nerves and blood vessels
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9
Q

ABduction

A

movement in coronal plane away from midline

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10
Q

ADduction

A

Moving toward midline in coronal plane

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11
Q

Supination VS Pronation

forearm, mandible

A

Supination: Twist at the elbow, rotating forward “hold soup and throw it away”

Pronation: Rotate JUST the Forarm

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12
Q

Circumduction

A

This is NOT rotation of limbs- its movement between abduction and adduction

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13
Q

Plantarflexion VS. Dorsiflexion

A

(ANKLE ONLY)

Plantarflexion: point toes down (like a ballerina)

Dorsiflexion: point toes upward

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14
Q

Inversion VS Eversion

A

(ANKLE ONLY)

Inversion: sole of the foot turns medially (when foot goes in and ankle goes out)–like supination

Eversion: when sole of foot goes outward (break ankle)–like potenation

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15
Q

Elevation VS Depression

A

Jaw: Elevation: close your mouth

Depression: open your mouth

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16
Q

Protraction VS Retraction

A

Mandible-

Protract: stick it out like an underbite

Retract: pull it in like an overbite

Shoulders-

Protraction: when shoulder blades are away from midline

Retraction: when shoulder blades get moved back toward it (can also use AB Adduction)

17
Q

Protrusion VS Retrusion

A

Protusion: stick it out like underbite

Retrusion: pull jaw back in (overbite)

18
Q

Medial VS Lateral rotation

Internal VS external rotation

A

Actually turn bone of its long axis; only usually on hip and shoulder

Medial: turning TOWARDS midline
Lateral: opposite: away from midline
Different from circumduction bc you are actually rotating the bone at joint on long axis

19
Q

Fascia

A

Connective Tissue important for organization and support of body structures

  • surrounds muscle, bones, organs, nerves
  • Contain blood vessels and tissue receptors- can respond to injury
20
Q

Fascia is divided into…

A

Superficial (subcutaneous) fascia- loose connective tissue

Deep Fascia- Dense connective tissue that helps organize body into muscle compartments

21
Q

Body location and Cell shape/appearance of Skeletal Muscle

A

Attached to bones.

Single, very long, cylindrical, cells with obvious striations (pic)

22
Q

Body location and Cell shape/appearance of Cardiac Muscle

A

Wall of heart.

Branching chains of cells, uni- or binucleated striations

23
Q

Body location and Cell shape/appearance of Smooth Muscle

A

Unitary muscle in walls of hallow organs.

Single, fusiform, uninucleated, no striations

24
Q

Muscles have __ and __

A

Origins- the attachment point that is not moved during the contraction of the muscle (more stationary part)

Insertion- the attachment point that is moved during the contraction of the muscle. This is where the tendon of the muscle will attach to the bone (more movable part)

25
Q

Limbs are organized into muscle compartments by…

A

tough layers of deep fascia and connective tissue

26
Q

Muscles can only move bones that are…

A

that they are attached to.

Muscles with common action are grouped together

27
Q

The ARM has _ and _ compartments

A

Anterior and Posterior

28
Q

the FOREARM has _ and _ compartments

A

Anterior and Posterior (deep and superficial in each)

29
Q

The THIGH has _, _, and _ compartments

A

Anterior, Posterior, and Medial

30
Q

The LEG has _, _. and _ compartments

A

Anterior, Posterior, and Lateral Compartments