How is the circulatory system involved with the respiratory system?
A. It moves air into the lungs.
B. It moves red blood cells to the larynx so sounds can be made.
C. Oxygen and carbon dioxide diffuse in and out of the capillaries that surround alveoli.
D. Blood pressure keeps the C-shaped rings in the trachea from collapsing.

What substance acts to prevent sudden ph changes in bodily fluids?

Hemoglobin is a proton that carries oxygen around the body what is hemoglobin made from

Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).