Revision From PM1

Question 1

Skin age related changes

Answer 1

• increase thickness of stratum corneum (reduced keratin turnover)
• Reduced capillary loops - less bloody supply (dry skin)
• Reduced elasticity (reduced and thickened collagen)
• Reduced oil secretion (density of sweat glands

Question 2

Nail age related changes

Answer 2

• reduced nail growth rate
• Increased thickness of nail plate

Question 3

Vascular system age related changes

Answer 3

• Collagen crosslinking
• Increased thickness and stiffness of vessels (artery, vein, capillary)
= reduced blood flow

Question 4

Sensory age related changes

Answer 4

• Reduced size and number of axons
• Deterioration of myelins sheaths
• Reduced density of corpuscles

Question 5

Skeletal/muscular age related changes

Answer 5

• reduced bone density
• Reduced muscle mass
• Reduced elasticity