What are the anatomical and functional differences between eccrine and apocrine glands?

Structure and Function of the Skin

Yael is an 18-year-old college student who is bothered by excessive perspiration. She knew she sweat a lot under her arms and kept antiperspirant in her schoolbag to use throughout the day. Yael’s problem was not limited to under her arms, however. Her hands and feet also perspired heavily, and it embarrassed her. She did not like holding her boyfriend’s hand if her hands were particularly sweaty, and she had problems grasping her pen while in class because her palm became slippery. Yael suffered from a condition called primary focal hyperhidrosis, a condition involving hyperactive sweat glands in certain areas of the body.

1. What are the anatomical and functional differences between eccrine and apocrine glands?
2. What autonomic nervous system controls the function of thermoregulation of the skin? How do goosebumpsgoose bumps contribute to heat conservation?
3. Describe the location of the blood plexuses in the skin. How is blood circulation to the skin involved in thermoregulation?