health practices chapter 2

What are the four types of tissues in the body and their functions?

Muscle tissue (contracts), Nervous tissue (generates/conducts electrical messages), Epithelial tissue (covers/lines surfaces/forms glands), Connective tissue (binds, supports, insulates, protects).

What is the primary function of the skeletal system?

To provide support, protection, movement, blood cell production, and mineral storage.

What is the composition of bone's extracellular matrix?

Calcium salts and collagen fibers.

What are the five types of bone based on their shape?

Long bones, short bones, flat bones, irregular bones, and sesamoid bones.

What is the epiphyseal plate and its significance?

It is the 'growth plate' located between the epiphysis and diaphysis, indicating where bone growth occurs.

What is osteopenia?

A condition characterized by a loss of bone density.

How many bones are in the human skeleton?

206 bones in total.

What is the difference between a sprain and a strain?

A sprain is an injury to a ligament, while a strain is an injury to a muscle.

What is the role of estrogen in bone density?

Estrogen is protective for bone density.

What are the classifications of joints in the human body?

Cartilaginous joints, gliding joints, hinge joints, pivot joints, saddle joints, condyloid joints, and ball-and-socket joints.

Define stability in the context of joints.

Stability is the ability of a joint to withstand forces without injury.

What is the RDA for calcium intake for young adults aged 11-24?

1200-1500 mg of calcium.