Intervertebral discs exhibit a great deal of strength because of the presence of thick bundles of ________.
A. calcium
B. hydroxyapatite
C. collagen
D. elastin
E. proteoglycan
Answer: C
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A. torque B. fulcrum C. moment arm D. none of the above
Match the vein with the appropriate description.A. Drains blood from the armB. Superficial vein of the head and neckC. The posterior intercostal veins join this vein on the right side of the bodyD. Deep vein that drains blood from the cranial vaultE. Formed by the union of the internal jugular and the subclavian veinsExternal jugular vein
Fill in the blank(s) with the appropriate word(s).
Arrange the following structures in correct sequence: (1) ureter (2) renal pelvis (3) calyx (4) urinary bladder (5) urethra
A. 1, 2, 3, 4, 5 B. 3, 2, 1, 4, 5 C. 2, 4, 5, 3, 1 D. 3, 4, 1, 2, 5 E. 1, 3, 2, 4, 5
Which statement correctly describes endocytosis?
A. The passive movement of materials out of the cell B. The movement of materials in bulk into the cell C. The movement of small molecules out of the cell D. The movement of materials in bulk out of the cell