Which of the following is the dominant method of carbon dioxide transport?
a) Bound to hemoglobin
b) Bound to oxygen
c) Dissolved in plasma as a gas
d) Dissolved in plasma as bicarbonate ions
e) Diffusion
d
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Acetylcholine is:
A) an ion pump B) a source of energy for muscle contraction C) a component of thick myofilaments D) an oxygen binding protein E) a neurotransmjtter
Which of the following could be used to study general features of cells?
A. Binoculars B. A magnifying glass C. Scanning electron microscope D. Light microscope E. Transmission electron microscope
The rapidly depolarizing cells, called pacemaker cells, are found in the ________, which is embedded in the posterior wall of the right atrium.
A) right bundle branch B) AV node C) left bundle branch D) intermodal pathways E) SA node
The walls of lymphatic capillaries are only one cell thick
Indicate whether this statement is true or false.