Which of the following tissues covers and protects exposed surface areas of the body?
A) connective tissue
B) muscle tissue
C) epithelial tissue
D) bone tissue
E) nervous tissue
Answer: C
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Answer the following statement(s) true (T) or false (F)
1. A person with type O blood has antibodies against antigens A and B. Therefore, this person can be the recipient of type AB blood without any harmful effects. 2. Anemia is more common in the elderly as compared to younger people. 3. Increasing age also brings an increased chance of thrombosis. 4. Hemostasis is the production of formed elements of blood. 5. Lymphoid hemopoiesis occurs mainly in the bone marrow.
The mean arterial pressure is a simple average of the systolic and diastolic pressures
Indicate whether the statement is true or false
Along a neuron, an action potential normally travels from the dendrites to the cell body to the axon
Indicate whether the statement is true or false
Which of the following statements related to the "ON pathway" of the visual system is correct?
A. Bipolar cells fire action potentials only when bright light strikes the photoreceptors linked to them. B. Bipolar cells spontaneously depolarize in the absence of input from photoreceptor cells. C. Bipolar cells hyperpolarize in the absence of input from photoreceptor cells. D. Glutamate receptors on bipolar cells are excitatory. E. Only cones are associated with bipolar cells of the "ON pathway," rods are not.