What is the main function of the quadriceps femoris group
a. arm flexion
b. hand supination
c. thigh abduction
d. knee extension
e. foot inversion
Answer: d. knee extension
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Which of the following is the correct sequence of events in bulk-phase endocytosis shown in the figure?
a) plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes > solutes released b) solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > vesicle formed pinches off into cytosol > digestion by enzymes c) vesicle formed pinches off into cytosol > solutes released > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes d) vesicle formed pinches off into cytosol > plasma membrane forms vesicle around extracellular droplets > fusion of lysosome and vesicle > digestion by enzymes > solutes released e) plasma membrane forms vesicle around extracellular droplets > vesicle formed pinches off into cytosol > fusion of lysosome and vesicle > digestion by enzymes > solutes released
A goblet cell produces ____________
Fill in the blank(s) with the appropriate word(s).
One of the divided origins of a muscle is termed a head.
Answer the following statement true (T) or false (F)
Which of the following is not true of veins?
a. Blood drains into them from venules. b. They carry blood back to the heart. c. They have a thicker tunica media than do arteries. d. Their innermost layer is called the tunica intima.