The endocrine system is a system of ductless glands that secrete hormones—chemical messengers that are carried for long distances. The endocrine system is a system of ductless glands that secretes hormones directly into the circulatory system to be carried long distances to other target organs regulating key body and organ functions. For example, the pineal gland, located at the base of the brain, secretes the hormone melatonin, responsible for regulating sleep patterns. Endocrine glands are typically well vascularized and the cells comprising the tissue are typically rich in intracellular vacuoles or granules that store hormones prior to release. Endocrine signaling is typically slow to initiate but is prolonged in response; this provides a counterpoint to the more rapid and short-lived nervous system signals.
12.1: Case Study: Hormones and Health
Ch. 17 Chapter Review - Anatomy and Physiology | OpenStax
Production by the adrenal gland is insignificant compared with sex hormone release from the gonads during late puberty. Search Speak now. Chapter 16 Endocrine System. Questions All questions 5 questions 6 questions 7 questions 8 questions 9 questions 10 questions 11 questions 12 questions 13 questions 14 questions 15 questions 16 questions 17 questions 18 questions 19 questions 20 questions 21 questions 22 questions 23 questions. Feedback During the Quiz End of Quiz.
Endocrine system questions 1
The outer portion, or cortex, secretes steroid hormones corticosteroids. The inner portion, or medulla, secretes epinephrine and norepinephrine. It is located at the center of the gland, being surrounded by the adrenal cortex.