Ch 6 Anatomy Homework

While observing bone tissue, you notice that osteoblast activity exceeds osteoclast activity. What is happening then?

bone growth

1st step of endochondral ossification:

calcification of matrix surrounding chondrocytes

2nd step of endochondral ossification:

cells from the perichondrium differentiate into osteoblasts

What is the main difference between spongy bone and compact bone?

compact bone contains osteons; spongy bones contain trabeculae

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

Intramembranous ossification results in the formation of which of the following bones?

mandible

Which of the following is responsible for the production of new bone?

osteoblasts

Bone cells capable of dissolving the bony matrix are termed

osteoclasts

4th step of endochondral ossification:

osteoclasts break down the spongy bone to create marrow cavity

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

periosteum

As you stand on the tip of your toes to reach the top shelf of the cabinet, which joint movement are you performing?

plantar flexion

What three things are essential for normal bone growth?

sex hormones, calcium, vitamin D3

___________ ________ is NOT a function of the skeletal system.

temperature maintenance

Which of the following is a freely movable joint? A) Syndesmosis B) Synarthrosis C) Amphiarthrosis D) Diarthrosis

Diarthrosis

A round opening through the bone that acts as a passageway for blood vessels or nerves is anatomically referred to as a

foramen

3rd step of endochondral ossification:

formation of the primary ossification center

5th step of endochondral ossification:

formation of the secondary ossification centers

The head of the humerus articulates with what on the scapula?

glenoid cavity