________ arteries supply blood to the functional zone of the endometrium
A) Straight
B) Arcuate
C) Spiral
D) Radial
E) None of the answers is correct; the functional zone of the endometrium is not vascularized.
Answer: C
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Plasma protein attached to cholesterol is a form of
A) globulin. B) lipoprotein. C) carbohydrate. D) fibrinogen. E) albumin.
The oval window
a. attaches to the stapes. b. transfers the sound wave from the middle ear to the inner ear. c. is reflexively tightened in response to loud sounds to diminish transmission of these sounds to the inner ear. d. both attaches to the stapes and transfers the sound wave from the middle ear to the inner ear e. all of these answers.
On a muscle fiber, the two terminal cisternae and the centrally placed T-tubule form a structure called a ________.
Fill in the blank(s) with the appropriate word(s).
Which of the following statements concerning the embryonic circulatory system is true?
A. The heart develops from four endothelial tubes. B. Blood vessels form from blood islands. C. An opening in the interatrial septum is called the sinus venosus. D. The bulbus cordis becomes the sinoatrial node (the adult pacemaker). E. There is an opening in the interventricular septum.