Tissue Organisation: Topographical Basis

Question 1

Somatic

Answer 1

Refers to body as a whole - walls of trunk + limbs.

Question 2

Visceral

Answer 2

Organs within trunk + head and neck. Organs supplied by visceral nervous system/autonomic nervous system

Question 3

What are the functions of skin?

Answer 3

Protection
Thermoregulation
Vit D synthesis
Sensory information about surrounding environment

Question 4

Epidermal cell composition

Answer 4

90% keratinocytes

Also has melanocytes, Langerhans cells and Merkel cells.

Question 5

Dermal layer composition

Answer 5

Sweat glands, hair follicles, blood vessels, nerve endings.

Collagen, fibroblasts, macrophages, adipocytes and elastin

Question 6

Function of superficial fascia

Answer 6

Made up mostly of adipose tissue.
Stores water and fat.
Protects against mechanical shock (shock absorber)
Thermal insulation
Conduction - transports nerves and blood vessels to skin.

Question 7

Function of deep fascia

Answer 7

Conduction - blood vessels are transported via fascias in neurovascular bundles.
Movement of muscle - muscles wrapped in deep fascia are separate and so can move over each other.
Forms capsules around organs and glands, kidney.

Question 8

Serous membranes

Answer 8

The pleura
The pericardium
The peritoneum (around abdomen)

Question 9

How is a continuous flow of blood guaranteed despite body position

Answer 9

Collateral arteries

Question 10

What does the somatic nervous system innervate?

Answer 10

Walls of trunk, limbs