Exam 35: Structural Support and Movement

Match each description to its correct term. -this protein repeatedly binds,moves,and releases an adjacent thin filament causing a muscle to contract

Answer the following questions with reference to the bones listed below. Answers may be used more than once or not at all. -This bone connects to the femur.

Which type of skeleton is found in a sea stars?  

The __________ consists of skull bones,a vertebral column (backbone),and a rib cage.

Red muscle fibers contain an abundance of _____ for aerobic respiration.  

In muscles,aerobic respiration uses glucose derived from stored glycogen as energy source for the first ten minutes of activity; after over half an hour,_____________ becomes the main fuel source.  

The axial skeleton includes which of the following?  

Figure 35.5 -What type of skeleton is found in an earthworm,as illustrated in the accompanying figure?  

ring of muscle that controls the opening of a tubular organ

Answer the following questions with reference to the joints listed below. -Allows for a variety of movements (for example,ball-and-socket joints).

During muscle contractions,____.  

Match each description to its correct term. -contractile units of muscle

Figure 35.15 -The structure indicated by the letter "B" above represents ____.  

__________ are cells that synthesize bone,whereas __________ break down bone matrix.

What results when the rate of bone loss exceeds bone formation?  

Prolonged sitting decreases production of _____,which facilitates removal of harmful lipids from the blood.  

Which of the following are the most abundant cells in adult bones?  

Skeletal muscles act by _______________.  

Which of the following are called bone-building cells and secrete the components of the matrix?

What are cells that break down the matrix by secreting acids and enzymes and play a role in bone remodeling and repair?