Exchange of both oxygen and carbon dioxide through the respiratory membrane occurs by  

The matrix of blood is called

Preparing the body for the “fight-or-flight” response during threatening situations is the role of the

Botulism toxin (botox) inhibits the release of acetylcholine, and it is used for cosmetic reasons. How does it prevent wrinkles?

Lymph in the right leg rejoins blood flow in the

The series of reactions that stop blood flow following a cut is called

Where are the sensory receptors for equilibrium located?

Which one of the following cells are classified as agranulocytes?

The diffusion of potassium ions out of a neuron causes it to experience

Impulse conduction is fastest in neurons that are