Growth of Bones?

Question

1, Describe the parts of a long bone.

2. What is the function of bone marrow? How does red marrow differ from yellow marrow?


3. How do voluntary muscles differ?

4. how does cardiac muscle compare muscles differ?

5. How does cardiac muscle compare with smooth muscle?

6. Describe how the action of muscles allows you to bend your arm and to starightn your arm.

7. What are the differnces between a sprian, a strain, and a fracture?

8. Describe the two layers of the skin

9. Describe three structures found in the dermis.

10. How does sweat cool the body?

11. List three functions of the skin.

Answer 1

1. the diaphysis (or shaft) and the epiphyses on the ends
2. red bone marrow is where the red blood cells are produced (errythropoeisis), yellow marrow is where we find adipose tissue (or fat)
3. voluntary muscles, also known as skeletal muscles are under voluntary control (the somatic nervous system)
4. cardiac muscle (myocardium) has an intrinsic nervous system, it is controlled by the SA node and modified by the autonomic nervous system
5. smooth muscle, also known as visceral muscle is involuntary and is found in the walls of some organs, the respiratory tract, and in the blood vessels, smooth muscle is controlled by the autonomic nervous system
6. in skeletal muscle a nerve impulse causes the muscle to contract, the muscle then pulls on the tendon, the tendon then pulls on the bone causing movement
7. sprain = ligament damage, strain = muscle or tendon damage, fracture = break or chip in bone
8. epidermis, the most superficial layer and the dermis is the deep layer and is where the blood vessels and nerves are found, as well as the integumentary glands and hair follicles
9. see #8
10. perspiration allows for evaporation thus pulling heat away from/cooling the body
11. protection (a physical barrier, a chemical barrier, a biological barrier), provides for the creation of vitamin D, and provides for sensory stimuli (touch, temp, and pressure)

Good luck.

Answer 2

Looks like you have a lot of research to do. I'll help.

10. Evaporation.