Which of the following is common in the distal small intestine?
A. MALT
B. Macrophages
C. Diffuse lymphatic tissue
D. Lymphatic nodules
E. Aggregated lymphoid nodule
Answer: E
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Which of the following statements is/are true?
A. When the knee undergoes a significant amount of flexion, it is necessary for the femur to slide forward on the tibia in order to prevent its rolling off of the tibial plateau. B. During extension, the femur must slide backwards on the tibia. C. both A and B D. none of the above
The working distance for a 10× objective lens is ________.
Fill in the blank(s) with the appropriate word(s).
When a photoreceptor cell is stimulated by light:
A) the photoreceptor hyperpolarizes as sodium ion channels close. B) sodium ions enter the outer segment of the photoreceptor and depolarize it. C) opsin and cis-retinal combine to form rhodopsin. D) transducin and phosphodiesterase (PDE) are inactive.
The cytoskeleton component composed mainly of the protein actin is a __________.
Fill in the blank(s) with the appropriate word(s).