Anatomy & Phys Quiz 3

Which of the following bone shapes and examples are mismatched?

Short bones; vertebrae

Your doctor suggests that you increase your calcium intake to maintain your healthy bones. You do not understand why the doctor suggested this since you are a healthy 32-year-old. What was the doctor's reasoning?

You are at an age where calcium levels in the bone may start to subside, producing weaker bones later in life

An increase in the diameter of growing bone is termed ________ growth

appositional

While observing bone tissue, you notice that osteoblast activity exceeds osteoclast activity. What are you observing?

bone growth

Channels within bone, involved with cell-to-cell communication, are called

canaliculi

The primary function of ________ is exemplified when bones function as to change the magnitude and direction of the forces generated by skeletal muscle

leverage

A primary function of the skeletal system is

maintaining the normal concentrations of calcium and phosphate ions in body fluids

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

osteoclasts

Two hormones that work together to elevate calcium levels in the body are ________ and ________

parathyroid hormone; calcitrol

The sternum is part of the thoracic cage and is found in the axial division of the skeleton`

this was a question regarding the flat front bone of the rib cage (xyphoid process ?) and it's AXIAL position

The following events are part of endochondral ossification. In which order do they occur? --Formation of the primary ossification center --Osteoclasts break down the spongy bone to create marrow cavity. --Cells from the perichondrium differentiate into osteoblasts. --Formation of the secondary ossification centers --Calcification of matrix surrounding chondrocytes

5,3,1,2,4

Which of the following occurs in intramembranous ossification?

Fibrous connective tissue is converted to bone tissue, which first resembles spongy bone

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 note: Synovial fluid is produced by fibroblasts in the connective tissue of the synovial membrane

You and your twin sister, both 18 years of age, were in a car accident. She had a clean break across the humerus and the upper arm bone-no bleeding, no break in the skin. However, you have a very messy break of the distal tibia in the lower leg, requiring pins to be inserted. Which statement is true regarding the differences in your break and your sister's break?

You will be given antibiotics to reduce bacterial infection, whereas your sister will not.