The Endocrine System

Question 1

Function of the Hypothalamus

Answer 1

Region of the forebrain
Supports the autonomous nervous system
Coordinates the pituitary gland - temp, thirst, hunger
Involved in sleep and emotions

Question 2

Function of the Endocrine system

Answer 2

Works with the regulatory and nervous system
Secretes chemical messages carried in bloodstream to target organs

Question 3

Secretion of a hormone in response to

Answer 3

Nerve impulse
Releasing hormone
Blood levels
Feedback loops

Question 4

What do hormones do?

Answer 4

Control emotions and moods
Regulating growth
Regulating metabolism
Controlling tissue functions

Question 5

What is homeostasis

Answer 5

Maintaining of a constant internal environment

Question 6

What processes are controlled by homeostasis

Answer 6

Glucose regulation
Blood pressure
Reproductive cycles
Growth
Osmoregulation

Question 7

What do Exocrine glands do?

Answer 7

Produce fluids such as digestive juices from the pancreas
Secreted onto the surface of tissues
Release fluid via ducts
Lie closer to their target organs

Question 8

What do Endocrine glands do?

Answer 8

Produce chemicals - hormones
Hormones are then carried by blood
Only affect target organs

Question 9

Circulating Hormones

Answer 9

Travel in blood to act on the whole body
All known as endocrine
Messages can take a while to reach target cells and often long lasting
Examples - insulin, oestrogen, testosterone, ADH

Question 10

Locally Acting Hormones

Answer 10

Don’t enter the bloodstream but are released by cells to act on their own tissues or ones nearby
Autocrine group act on nearby cells
Paracrine or Juxtacrine act on nearby cells
Examples - Histamine. gastrin, glucagon