Mammallian Joint Morphology Flashcards

1
Q

What is the axial region comprised of?

A

Skull/cranium, vertebral column, ribs and sternum

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2
Q

What is the apppendicular division made of?

A

Limb bones

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3
Q

What are joints?

A

Articulations that either firmly unite bones or allow specific movements between bones

Can be fluid or rigid

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4
Q

What type of joint are the joints in the limbs?

A

Synovial

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5
Q

What joints are in the forelimb?

A

Shoulder, elbow, carpal joints

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6
Q

What joints are in the hindlimb

A

Hip joint, stifle joint, tarsal joints

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7
Q

Describe the anatomy of the synovial joints

A
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8
Q

Where can synovial fluid be found

A

Synovial joints, bursae, and tendon sheaths

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9
Q

What is synovial fluid made of and what does it do

A

Made of mainly a trans update of blood plasma; has viscoelastic properties

Allows articular cartilage to glide and absorb stress

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10
Q

What are suture joints

A

Rigid joints

Example: skull plates —> see sutures in younger skulls and would fuse together with age

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11
Q

What are syndesmosis joints

A

Found in the hip

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12
Q

What are gomphosis joints

A

Specialized joints

Dento-alveolar joints

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13
Q

What are sychindylesis joints

A

Ridge and groove

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14
Q

What are ruffini endings

A

Respond to stretch and register the speed and direction of movement

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15
Q

What are golgi tendon organs

A

Mediate position sense

Are tendons in large organs and monitor tension levels while the muscle is contracting

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16
Q

What are simple endings

A

Numerous at the attachments of capsules and ligaments and are thought to be the terminals of unmyelinated and thinly myelinated nociceptive axons

17
Q

What role do neurons play in muscle attachment/innervation

A

Help prevent injury from over-contraction

18
Q

What is an agonist

A

Contracting muscle needed to generate movement

FIRST PARTICIPANT

19
Q

What is an antagonist

A

Muscle which relaxes during contraction of agonist muscle

Need this to relax other muscle in order to contract

20
Q

How does the limb lever position play a role in animals

A

The close it is, the quicker it can move BUT with less force

Farther away = slower movement, but more force

21
Q

Describe how forces developed by skeletal muscles are transferred to bone

A

Transferred by tendons, aponeuoses and fasciae
Ligaments prevent excessive separation of adjacent bones

ALL OF THESE STRUCTURES comprise dense fibrous CT containing a high proportion of type 1 collagen

22
Q

How does the femur connect to the acetabulum

A

Ligament of femoral head which is a continuation of the transverse acetabular ligament

23
Q

Describe hip dysplasia

A

-abnormal development of the coxofemoral joint; muscle mass does not increase rapidly enough to account for rapid bone growth

24
Q

What are some characteristics of hip dysplasia

A

-joint laxity or instability
-leads to degenerative joint changes