3. Which of the following statements are accurate?
A. Veins in the pulmonary circuit carry oxygen-rich blood
B. Arteries in the pulmonary circuit deliver oxygen-rich blood to the body tissues.
C. All arteries carry blood away from the heart
D. Arteries in the pulmonary circuit deliver oxygen-poor blood to the lungs.
E. Veins in the systemic circuit return oxygen-poor blood to the heart.

A.) Veins in the pulmonary circuit carry oxygen-rich blood

red blood cells are used to circulate oxygen through out the body, thus it is true.

"menstrual cycle is a complex cycle that consists of several processes. order of occurrence of steps in menstrual cycle are as follows:

1. high progesterone levels maintain the endometrium lining of the uterus.

2. endometrium lining breaks down and low levels of estrogen stimulate the pituitary to release fsh and lh.

3. fsh and lh stimulates the follicles to develop and the oocyte to produce estrogen.

4. rising estrogen levels suppress fsh production and development of other follicles.

5. a spike in lh causes follicle to rupture.

6. a breakdown of corpus luteum causes progesterone level to drop."