Dysfunctional breathing results in an increase in the activity level of which of the following secondary respiratory muscles

a. scalenes
b. rectus abdominis
c. internal oblique
d. diaphragm

Answer is A. Scalene.

Explanation:

Dysfunctional breathing is a breathing disorder , which is characterized by changes in breathing pattern. It can also be described as an alteration in normal breathing.

The scalene are muscles which are found at the neck, and act as accessory muscle of respiration.

"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."