A+P CH 06 HW

The smooth, rounded, or oval articular process of a bone is termed a

condyle

The hormone calcitonin functions to

depress calcium levels in body fluids.

The shaft of a long bone is called the

diaphysis

Problems with joints are relatively common, especially in older people. Rheumatism is a general term for pain and stiffness in the skeletal or muscular systems, or both. Arthritis includes all the rheumatic diseases that affect joints. What types of joints are freely movable?

diarthroses

Which of the following is a freely movable joint?

diarthrosis

The bone cells that contribute to increases in calcium in blood are the

osteoclasts.

Recall that bone is a supporting connective tissue (as you saw in Chapter 4: The Tissue Level of Organization). All of the features and properties of the skeletal system ultimately depend on the unique and constantly changing properties of bone. What is the name of the mature bone cell that lives in the lacunae of bone?

osteocytes

The connective tissue covering the outer surface of a bone is (the)

periosteum.

Osteoporosis is a condition that reduces bone mass so much that normal function is compromised Sex hormones are important in maintaining normal rates of bone deposition. Over age 45, an estimated 29 percent of women and 18 percent of men have osteoporosis. Osteoporotic bones break easily and do not repair well. Which bone cells are responsible for the formation of new bone matrix?

Osteoblasts are the bone cells that produce new bone matrix.

Skeletal System

Provides structural support Stores calcium and other minerals Produces blood cells Provides leverage for movement

Where in the skeletal system are blood cells produced?

Red bone marrow

Integumentary Svstem

Removes excess heat Synthesizes vitamin D3 Protects underlying bones and joints

Which of the following is true?

Skeletal muscles pull on bones to produce movement.

Integumentary and Skeletal Systems

Stores lipids as energy reserves

What is the importance of the lipids that are stored in the skeletal system?

They are stored as energy reserves

Which of the following is NOT a function of the skeletal system? Protects internal organs Production of blood cells Stores calcium and phosphate Vitamin Dz synthesis Leverage for movement of arms and legs

Vitamin Dz synthesis

Hip fractures most often occur in individuals over the age of 60, when osteoporosis has weakened the thigh bones. These injuries may be accompanied by dislocation of the hip. What is the name of the pelvic joint cavity that articulates with the head of the femur to form the hip joint?

acetabulum

Which division of the skeleton does bone "F" belong to?

axial

Recall that a synovial membrane lines the cavity of a freely movable joint (as you in saw Chapter 4 The Tissue Level of Organization). The synovial fluid it secretes lubricates the joint and permits smooth movement. What kind of cells secrete the synovial fluid?

fibroblasts