In an aging heart, increased flexibility of the heart valves may lead to a heart murmur.
Answer the following statement true (T) or false (F)
False
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How do most polar molecules move through a cell membrane? Explain why water, a polar molecule, is able to cross the nonpolar portion of a cell membrane.
What will be an ideal response?
Which condition is the result of one ventricle not pumping as much blood as the other that leads to edema in peripheral tissues?
A. Rheumatic fever B. Cardiac tamponade C. Myocardial infarction D. Congestive heart failure E. Mitral valve prolapse
Small, wandering cells that engulf cell debris and pathogens in the CNS are called
A) astrocytes. B) satellite cells. C) oligodendrocytes. D) microglia. E) ependymal cells.
Name the three types of muscle tissue, identify where they are found, and list their functions
A) Skeletal muscle is directly or indirectly attached to bones and enables movement of the body. Cardiac muscle forms the heart and propels blood. Smooth muscle is found throughout the body and moves substances through hollow tubes, such as in the digestive tract and regulates the diameter of blood vessels. B) Skeletal muscle is found throughout the body and moves substances through hollow tubes, such as in the digestive tract and regulates the diameter of blood vessels. Cardiac muscle forms the heart and propels blood. Smooth muscle is directly or indirectly attached to bones and enables movement of the body. C) Skeletal muscle forms the heart and propels blood. Cardiac muscle is directly or indirectly attached to bones and enables movement of the body. Smooth muscle is found throughout the body and moves substances through hollow tubes, such as in the digestive tract and regulates the diameter of blood vessels. D) Skeletal muscle is directly or indirectly attached to bones and enables movement of the body. Cardiac muscle is found throughout the body and moves substances through hollow tubes, such as in the digestive tract and regulates the diameter of blood vessels. Smooth muscle forms the heart and propels blood. E) Skeletal muscle is found throughout the body and moves substances through hollow tubes, such as in the digestive tract and regulates the diameter of blood vessels. Cardiac muscle is directly or indirectly attached to bones and enables movement of the body. Smooth muscle forms the heart and propels blood.