You will frequently be called upon to deal with internal bleeding. Blunt trauma is the leading cause of internal injuries and bleeding. Which of the following are mechanisms of blunt trauma that may cause internal bleeding? 1. Falls 2. Motor vehicle or motorcycle crashes 3. Auto-pedestrian collisions 4. Blast injuries

2. Motor vehicle or motorcycle crashes

Explanation:

Blunt trauma is the initial trauma from which more common forms arise such as  abrasions, l, contusions, acerations, internal bleeding and/or bone fractures.

It can quickly lead to exsanguination, hemorrhagic or hypovolemic shock, and death if penetrating trauma occurs in blood vessels close to the heart. Another source of vascular damage that can lead to internal bleeding is blunt trauma. This can happen in an automotive crash following a high speed deceleration.

Several motor vehicle or motorcycle crashes causes internal bleeding in abdominal cavity which damages ribs as well.

Hence, the correct option is 2. Motor vehicle or motorcycle crashes.

"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."

the answer is d. exposing corruption in the church