Myofibrils are composed of:

The ANS regulates all of the following EXCEPT

Identify the muscle labeled 12. 

Identify the muscle labeled 28. 

All of the following are typical characteristics of neurotransmitters except:

Smell information travels to the brain by way of the:

To stimulate muscle contraction, acetylcholine is released from the ___________ into the synaptic cleft.   

The structures that detects angular or circular movement are the

Athletes who train at high altitudes increase their red blood cell count and thus increase their oxygen supply during exercise. Increased oxygen supply results in:

Identify the muscles labeled C.