The system of nerves that govern reflexes, glands, the iris of the eye, and activities of interior organs that are not subject to voluntary control is called the .

The system of nerves that govern reflexes, glands, the iris of the eye, and activities of interior organs that are not subject to voluntary control is called the autonomic nervous system

Explanation:

The autonomic nervous system is the involuntary division of the nervous system. It is composed of nerve cells that are related to the innervation and control of visceral organs, smooth muscle and secretory glands. It is divided into two systems, the sympathetic nervous system, which is responsible for activating most of the body's organs; and the parasympathetic nervous system, which is responsible for relaxing the activity of most organs, except those related to digestion.

The autonomic nervous system is responsible for regulating the involuntary visceral functions of the organism. Also, it's responsible for the maintenance of body homeostasis and the body's adaptation responses to variations in the external and internal environment. Thus, it helps to control, among other functions, blood pressure, heart rate, urinary emission, sweating, body temperature, among others. Most of the functions of the system are unconsciously regulated by means of visceral reflexes.

the level of progesterone is low at the pre-ovulatory phase of the cycle but it gradually increases and the levels are high at the luteal phase. if pregnancy occurs, the level of progesterone will be high throughout the pregnancy.

if egg is fertilized and the mother gets pregnant, progesterone starts preparing the uterus for the implantation. it starts building up the lining of uterus and make it hostile of the period of pregnancy.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides