By far, the most abundant cellular elements in the blood are the ____________________
Fill in the blank(s) with correct word
erythrocytes (red blood cells)
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The relationship between what two ions determines the blood's pH?
A. Hydrogen and sodium B. Carbon dioxide and sodium C. Hydrogen and bicarbonate D. Sodium and hydrogen
All bones in the fetal skeleton contain red marrow that produces blood cells.
Answer the following statement true (T) or false (F)
Match the transport process to its description.
1. the movement of molecules from an area of high concentration to an area of low concentration 2. the use of ATP to move molecules 3. a form of mediated transport 4. conform(s) to the properties of specificity, competition, and saturation A. simple diffusion B. facilitated diffusion C. both D. neither
Describe characteristics of receptors at the synapses. Select all that apply.
a. They only open in response to voltage changes across the membrane b. All receptors are gated ion channels c. Only specific molecules are able to bind to the receptors d. They are ligand activated receptors