State the peripheral nervous system. Write the answer from own words.

The peripheral nervous system (PNS) consists of all the nervous tissue that lies outside of the central nervous system (CNS).

Explanation:

The PNS consists of the nerves and ganglia outside the brain and spinal cord. The main function of the PNS is to connect the CNS to the limbs and organs, essentially serving as a relay between the brain and spinal cord and the rest of the body.

Explanation:

the index of refraction of the second medium is higher. i just took the test trust me !

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.