Marble head schools chapter 5 ap bio study guide answers

After comparing the incoming information to a set point, the control center sends out a signal that directs an effector to respond.A receptor, or sensor, detects a stimulus and sends information to a control center.The fundamental concepts of biological control systems are important in regulation by hormones.The nervous system plays a role in certain sustained responses-controlling day/night cycles and reproductive cycles in many animals, for example-often by increasing or decreasing secretions from endocrine glands.Chemicals such as epinephrine serve as both hormones of the endocrine system and neurotransmitters in the nervous system.The hormones produced by these cells are sometimes called neurohormones.Certain specialized nerve cells known as neurosecretory cells release hormones into the blood.The nervous and endocrine systems overlap to some extent.Hormone-secreting organs called endocrine glands secrete hormones directly into the extracellular fluid, where they diffuse into the blood.Hormones also regulate long-term developmental processes such as growth and development of primary and secondary sexual characteristics.Hormones coordinate slow but long-acting responses to stimuli such as stress, dehydration, and low blood glucose levels.Collectively, all of an animalвЂ™s hormone-secreting cells constitute its endocrine system.Animals have two systems of internal communication and regulation, the nervous system and the endocrine system.A given hormone traveling in the bloodstream elicits specific responses from its target cells, while other cell types ignore that particular hormone.Д¬oncept 45.1 The endocrine system and the nervous system act individually and together in regulating an animalвЂ™s physiology.A hormone may reach all parts of the body, but only specific target cells respond to specific hormones.An animal hormone is a chemical signal that is secreted into the circulatory system that communicates regulatory messages within the body.Overview: The BodyвЂ™s Long-Distance Regulators Chapter 45 Hormones and the Endocrine System

Marble head schools chapter 5 ap bio study guide answers