What membranes protect the brain and spinal cord?
A. Mucous membranes
B. Meninges
C. Cutaneous membranes
D. Synovial membranes
Answer: B
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Arrange the following events of exocytosis in the correct sequence:(1) Vesicle membrane fuses with plasma membrane(2) Secretory vesicles migrate to plasma membrane(3) Vesicle contents are expelled from cell(4) Secretions accumulate within secretory vesicles
A. 1, 2, 3, 4 B. 2, 1, 4, 3 C. 4, 2, 1, 3 D. 1, 4, 2, 3 E. 3, 1, 4, 2
Nucleoli
A. produce ribosomal subunits. B. are important for the formation of the Golgi apparatus. C. regulate movement of materials into the nucleus. D. have a distinct membrane. E. are located in the cytoplasm.
Freckles are the result of
A. sun exposure. B. heredity. C. excessive melanocyte activity. D. All of the choices are correct. E. None of the choices are correct.
Which bone does not belong to the appendicular skeleton?
A. Femur B. Sacrum C. Calcaneus D. Clavicle E. Ulna