Which organs belong to the integumentary system?  

Smooth muscles that are attached to hair follicles and produce “goosebumps” when they contract are called ………..

The functional unit of a muscle fiber is the: …………………………..

Which cell type breaks down bone?  

Cell membranes are constructed mainly of ………………….

Long bones include the: ………………………

Which organelle is the major site of ATP production?

The terms and phrases in the key relate to one type of muscle tissue. Using the key, choose the best response to identify the type of muscle tissue. Key: striated branching cells Involuntary intercalated discs

The only movable bone of the skull is the: …………………………….  

The primary function of red bone marrow is: ……………………..