Maintaining Homeostasis

What is Homeostasis?

Temperature Control Ectotherm

Behavioral control Location change Hibernate/estivate

Endotherm Dispelling heat

Panting Sweating

Staying warm Shivering Fat/hair Location change

Hibernate/estivate/migrate

Osmotic Control Contractile vacuole Urine Production

Feedback Mechanisms Feedback inhibition

Product or result of process stops process Ex. Dog hot -> pants-> cools down ->

stops panting

Hormone Control Hormones Target Cell

Human Endocrine System

Pituitary GlandThyroid Stimulating Hormone

(TSH) Control metabolism

Growth Hormone Causes bone and muscle growth

Prolactin Milk production

Pituitary GlandLuteinizing Hormone (LH)

Menstrual cycle Causes testosterone

production in malesFollicle Stimulating

Hormone (FSH) Menstrual cycle Sperm production

Parathyroid GlandParathyroid

hormone Maintains proper Ca+

levels in blood

PancreasHormones

Insulin Glucagon

Adrenal GlandNoradrenaline and

Adrenaline Causes increase in HR, BP,

blood sugar, blood flow, and vessel dilation

GonadsAndrogens

Develops and maintains male reproductive system

Determines genderEstrogens

Develops and maintains female reproductive system

Progestins Prepares uterus for fetus