The nerves of the somatic nervous system connects to which two parts of the body? a. motor muscles and chemical receptors b. heart muscles and sensory receptors c. cranial muscles and motor receptors d. skeletal muscles and sensory receptors

Correct D) Skeletal muscles and sensory receptors

Somatic nervous system is a part of peripheral nervous system which is responsible for carrying motor and sensory information in and out of central nervous system. It is connected to skin, sensory organs and skeletal muscles.

The somatic nervous system consist of two basic types of neurons called as sensory neurons and motor neurons.

Sensory neurons: These neurons are also called as afferent neurons that carry information from nerves to central nervous system.

Motor Neurons: These neurons are also called as efferent neurons, which carry information from brain and spinal cord to muscles fibers across the body.

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.

satellites are frequently used to make observations of the orbit on earth