ic1 msk anatomy

Question 1

What is the outer layer of bone called

What is the inner lining of the marrow cavity

Answer 1

Periosteum

Endosteum

Question 2

What is the structural unit of compact bone

Answer 2

Osteon

Question 3

what are the 3 types of cartilage

Answer 3

Hyaline (most common)
Fibrocartilage (in knees)
Elastic cartilage (ear)

Question 4

3 types of muscle

striated or not
voluntary or not

Answer 4

Skeletal muscle: striated and voluntary

Cardiac muscle: striated and involuntary

Smooth muscle: non striated and involuntary

Question 5

What are myofibril made up of

Answer 5

Thick filament, aka Myosin
Thin filament, aka Actin

Question 6

What is a contractile unit of myofibril called

Answer 6

sarcomere

Question 7

2 sites of injection

Answer 7

deltoid (shoulder / arm)
gluteus maximus (butt)

Question 8

4 types of joints

Answer 8

Ball and socket (shoulder)

Hinge joint (between humerous to ulna)

Pivot joint (between ulna to radius)

Planar joint (gliding over eg. knee)

Question 9

Knee joint contains which joints

Answer 9

Hinge (between femur and tibia)

Planar joint (between patella and femur)

Question 10

What is worn out during osteoarthritis

Answer 10

Articular cartilage

Question 11

What are chondrocytes

Arise from, Found in, Secrete?

Answer 11

Cartilage cells

Arise from perichondrium
Found in lacunae
Secrete cartilage matrix