A&P1- exercise 9
give an example that illustrated the involuntary control of cardiac muscle tissue.
heart rate will increase with exercise. during sleep your heart rate slows.
cellular connection between cardiocytes
intercalated disc
what muscle tissues are controlled involuntarily?
cardiac and smooth muscle
involuntary, striated cells
cardiac muscle
striated, uni-nucleated cells
cardiac muscle
where in the body does smooth muscle occur?
digestive, urinary, respiratory, reproductive systems. lining of blood vessels and iris of the eye.
muscle fiber membrane
sarcolemma
what type of muscle tissue is striated?
skeletal and cardiac
how are skeletal and cardiac muscle tissues similar to each other? how do these two muscle tissues differ?
skeletal and cardiac muscle are both striated. skeletal muscle is voluntary, cardiac muscle is involuntary
muscle tissue in tip of tongue
skeletal muscle
voluntary muscle
skeletal muscle
describe how skeletal muscle fibers become multi-nucleated.
skeletal muscle fibers become multi-nucleated when embryonic cells called myoblasts fuse to form a synctytium, a cell with many nuclei. the resulting muscle fiber is a large, elongated multi-nucleated cell.
muscle tissue in artery
smooth muscle
non-striated muscle
smooth muscle
how are smooth muscle cells similar to skeletal muscle fibers? how are they different from skeletal muscle fibers?
smooth muscle and skeletal muscle both have a nucleus and cell membrane. DIFFERENCE: smooth muscle- non-striated, uni-nucleated. skeletal muscle- striated, multi-nucleated
what is the function of intercalated discs in cardiac muscle?
to conduct the stimulus of contraction to the neighboring cardiocytes