A centrifuged sample of blood shows 53% plasma, 1% buffy coat, and 46% erythrocytes. What percent of the blood is the hematocrit?
A) 53% B) 47% C) 46% D) 1%
Answer: C
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CD8 markers are to ________ T cells as CD4 markers are to ________ T cells
A) suppressor; cytoxic B) cytoxic; helper C) helper; suppressor D) NK; cytoxic E) plasma; NK
Answer the following statements true (T) or false (F)
1. Involuntary muscles are also called visceral muscles. 2. Tendons anchor muscles to bones. 3. The insertion of a muscle is on the more stationary bone. 4. The origin of a muscle is on the more movable bone. 5. The origin of a muscle is on the more stationary bone.
The role of a(n) ________________________________________, which is the shell of a cuttlefish, is to wear down a bird's beak
Fill in the blank(s) with correct word
Which of the following is not true about the anatomy of the urinary system?
A. The kidneys are retroperitoneal. B. The right kidney is located more inferiorly than the left kidney. C. The kidneys are at equal heights within the pelvic cavity. D. The urethra of males is longer than the urethra of females. E. The ureters connect the kidneys to the urinary bladder.