Physiology

Question 1

What’s a dermatome?

Answer 1

• An area of skin supplied by a single spinal nerve.
• Dermatome maps depict area of skin and group of muscles innervated by spinal nerves.
• Clinicians can assess cutaneous sensations with dermatome map as a way to localise lesions within central nervous system.

Question 2

Maternal diet affects foetal muscle growth.
Need protein in diet.
Low protein gives lower number of muscle fibres which affects postnatal growth and development.

Question 3

Primary function?

Answer 3

To generate forces and movements used in the regulation of internal environment to produce movements in external environment.

Question 4

Skeletal muscle facts?

Answer 4

• 650 skeletal muscles.
• 45% of body weight.
• 20/30% of total energy expenditure.
• Energy transduction- chemical energy to mechanical energy.
• Energy storage- Glycogen.