The following are major steps in the process of intramembranous ossification
1. Clusters of osteoblasts form osteoid that becomes mineralized.
2. Osteoblasts differentiate within mesenchymal connective tissue.
3. Spicules of bone radiate out from the ossification centers.
4. Mesenchymal cells aggregate.
What is the correct order for these events?
A) 4, 1, 2, 3
B) 2, 1, 3, 4
C) 4, 2, 1, 3
D) 2, 3, 1, 4
Answer: C
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Which of the following is not true about the anatomy of the urinary system?
A) The kidneys are retroperitoneal. B) The kidneys are at equal heights within the pelvic cavity. C) The urethra of males is longer than the urethra of females. D) The right kidney is located more inferiorly than the left kidney. E) The ureters connect the kidneys to the urinary bladder.
The pectoral girdle consists of 2 bones labeled _____ and _____ in the diagram
a) A and B b) A and G c) C and F d) F and H e) E and F
Aldosterone from the adrenal cortex causes sodium ions to be
A) conserved and potassium ions to be conserved. B) excreted and potassium ions to be excreted. C) conserved and potassium ions to be excreted. D) excreted and potassium ions to be conserved.
What two values are needed to calculate mean arterial pressure (MAP)?
A) heart rate and peripheral resistance B) diastolic pressure and systolic pressure C) stroke volume and cardiac output D) blood vessel length and blood vessel radius