Which of the following is a true statement?
a. estrous cycles are more frequent than menstrual cycles.
b. estrous cycles are not controlled by hormones.
c. all mammals have menstrual cycles.
d. the endometrial lining is shed in menstrual cycles but reabsorbed in estrous cycles.
e. ovulation occurs before the endometrium thickens in estrous cycles.

A) The endometrial lining is shed in menstrual cycles but reabsorbed in estrous cycles.

Explanation:

The endometrium can be defined as the inner layer of the epithelium. It along with the mucous membrane forms the covering of the mammalian uterus. It is the basal and functional layer of the uterus. This layer thickens and then shed during the menstruation cycle in humans and in some other mammals including the apes, monkeys, bats and elephants. But the endometrium layer is reabsorbed in the estrous cycle.

answer; hepatitis a& b can be passed through breast milk; (true);

when in a crucial situation, after calling 911, the correct posture for delivering effective compression is the proper hand placement.

first, place two fingers at the sternum, then put the heel of your other hand next to the fingers and place hand on top of the other. lock your elbows by using your body’s weight and compress the victim’s chest with a depth of 2 inches.

moreover, do 15 compression and 2 breaths, this process must be done four times until there is a pulse or a arrive.