Lesson 5: Tissues and Aging

Question 1

Process of loss of mass from tissues (aka progressive degeneration of muscle)

Answer 1

Atrophy

Question 2

What happens as we get older?

Answer 2

Skin and other tissues become thinner and drier, reduced elasticity, wrinkles, and HTN, hair turns gray b/c follicles produce less melanin

Question 3

Aging at the cellular level

Answer 3

Telomeres shorten each time cells divide causing cells to be less able to divide and regenerate, transport of O2 and nutrients into the cell and removal of CO2 and waste products out of cell are not as efficient in older, cells can start to function abnormally - which may lead to arthritis, memory issues, and some cancers

Question 4

When the equilibrium of the internal environment is disturbed within the body

Answer 4

Homeostatic imbalance

Question 5

Factors like genetics and aging that cause homeostatic imbalance

Answer 5

Internal influences

Question 6

Factors such as nutrition and vitamin deficiency that cause homeostatic imbalance

Answer 6

External influences

Question 7

Factors like temperature or exposure to environmental toxins that cause homeostatic imbalance

Answer 7

Environmental influences