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Anatomy > Joints > Flashcards

Joints Flashcards

0
Q

Weakest point of any skeleton?

A

Joints

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1
Q

2 basic functions of joints

A

Hold bones together

Enable movement

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2
Q

Joints

A

Result in a type of motion

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3
Q

Mobility vs stability body

articulations

A 
Most Mobile** Mobility  ( unstable)
1 glenohumeral joint ( shoulder)
2 Coxal ( hip joint)
3. Elbow joint
4. Intervertebral joints 
5 Suture 
Immobile***  Stability  (most stable)
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4
Q

Articulations: classification

Difference between fibrous, cartilaginous and synovial joints?

A

Fibrous - allows No movement

Cartilaginous - allows some movement

Synovial - allows free movement

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5
Q

Fibrous Joints

A

Held by dense regular ct
Little no movement
No joint cavity

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6
Q

Symphysis joint classification

A

Held by fibrocartilage

Resists compression
Shock absorber
Slight to no movement
No joint cavity

Found in pubic symphysis, intervertebral disc articulations

Cartilaginous joint*

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7
Q

Synchondroses joint classification

A

Cartilaginous joints

Joined w/ hyaline cartilage
Little to no movement
No joint cavity
May ossify over time( turn into bone)

Found in epiphyseal plates in growing bones, costochondral joints

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9
Q

Suture joint classification

A

Fibrous joints

Lambdoid suture connects occipital and parietal bones

Bones fused together to form unit
Held by dense regular ct
Little no movement
No joint cavity

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10
Q

Syndesmosis joint classification

A

Interosseous membrane between bones

Articulation between radius and ulna and between tibia and fibula

Held by dense regular ct little to no movement

  • fibrous
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11
Q

Synovial joint

A

Freely movable

Contains space between bones and joint cavity

Most complex & most common joint of body

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13
Q

Gomphosis joint classification

A

Tooth in socket ( avalous)
Tooth jaw

Held by dense regular cr
Little or no movement
No joint cavity

Fibrous joint

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14
Q

Anatomy of typical synovial joint

A 
Periosteum 
Ligaments 
Articular capsule: fibrous layer & synovial layer
Articular cartilage
Joint cavity ( contains synovial fluid)
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15
Q

Synovial fluid in joint cavity

A

Secretes synovial membrane

Lubricates ice on ice

Nourishes chondrocytes

Waste removal
Constantly recycles

Shock absorption

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16
Q

Meniscus

A

Wedge shaped fibrocartilage

In knee joint only

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17
Q

Bursa

A

Fluid filled sac lines w/ synovial brand used to overcome friction

18
Q

Anterior cruciate

A

Prevents from moving forward acl

19
Q

Posterior cruciate

A

Prevents from moving back word

20
Q

Tendon strength

A

An elongated bursa
Wraps around tendons filled with synovial fluid

Erases friction

Common in wrist hand ,foot ankle

Contains opened sheath in finger
Digital sheath in pinkie and ring
Common sheath in wrist hand

21
Q

Planar joint

A

Gliding

Simplest and least movable
Only side to side

I’m between interact plea and inter tarsals

Flat single plane uniaxial synovial joint

22
Q

Hinge joint

A

Uniaxial synovial joint

Found in elbow, knee, inter phalageal joints ( fingers/ toes

Movement In A single plane

23
Q

Pivot joint

A

Uniaxial synovial joint

Formation of ligamentous ring

One bone rotates on its longitudinal axis around bone.
Radio ulnar joint
Exp atlas and dense for head rotation

24
Q

3 types of synovial joints

A

Uniaxial
Biaxial
Multiaxial

25
Q

Condyloid joint

A

Biracial synovial joint

Movement in two axes
Convex/ concave surfaces
Mp joint ( knuckles/ toes)

26
Q

Saddle joint

A

Biaxial synovial joint

Greater range of movement

Convex/ concave saddle shapes surface

Carpetacarpal joint of thumb.

27
Q

Multiaxial synovial joint

A

Ball and socket joint

Most freely movable joint

Round head fits into round cup socket

Hip ( Coxal)

Shoulder ( gelenohumeral)

28
Q

Ball and socket joint

A

Have several protective bursae

Held together by complex ligaments and tendons

Anatomy (11 decks)

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