Blood from the vena cava flows into the ________________________________________________
Fill in the blank(s) with correct word
Right atrium
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The sodium-potassium pump moves
A. sodium and potassium into the cell. B. sodium and potassium out of the cell. C. sodium into the cell and potassium out of the cell. D. sodium out of the cell and potassium into the cell.
Match the following:
A) Chemical energy B) Radiant energy C) Electrical energy D) Mechanical energy 1) Legs moving the pedals of a bicycle. 2) When the bonds of ATP are broken, energy is released to do cellular work. 3) Energy that travels in waves. Part of the electromagnetic spectrum. 4) Represented by the flow of charged particles along a conductor, or the flow of ions across a membrane.
Answer the following statements true (T) or false (F)
1) The M line is located at the end of a sarcomere. 2) The H zone contains thick filaments only. 3) Under a light microscope the dark staining bands are the A bands. 4) The Z line is located at the center of a sarcomere. 5) Light staining areas of a muscle fiber are called I bands.
Of the following layers of the heart wall, which consumes the most energy?
A. Epicardium B. Myocardium C. Endocardium D. Visceral pericardium