Muscles and Bones

Question 1

muscles work like levers:
1. 1st class:
2. 2nd class:
3. 3rd class:

Answer 1

1. 1st class: fulcrum in middle
2. 2nd class: load in middle
3. 3rd class: effort in middle

Question 2

what are the 3 types of muscle contraction

Answer 2

1. concentric
2. eccentric
3. isometric

Question 3

around 50% of bone is made of an inorganic mineral called:

Answer 3

hydroxyapatite

Question 4

where do osteocytes live

Answer 4

in the lacunae of the lamellae within osteons

Question 5

what is the central canal of the osteon, and what does it contain

Answer 5

haversion canal, contains nerve, vein, and artery

Question 6

what type of cell deposits cartilage

Answer 6

chondroblasts

Question 7

what are the 2 types of embryonic bone formation

Answer 7

1. intramembranous ossification - upto 2 months, mainly flat bones
2. endochondral ossification

Question 8

what are the 2 types of embryonic bone formation

Answer 8

1. intramembranous ossification - upto 2 months, mainly flat bones
2. endochondral ossification

Question 9

what are the types of joints (3)

Answer 9

1. fibrous
2. cartilaginous
3. synovial