B5 Flashcards
What is homeostasis?
The process by which organisms maintain a stable internal environment.
True or False: Homeostasis only involves temperature regulation.
False
Which organ is primarily responsible for thermoregulation in humans?
The hypothalamus
Fill in the blank: The maintenance of blood glucose levels is an example of _____ homeostasis.
chemical
What is the role of insulin in the body?
To lower blood glucose levels.
What is negative feedback?
A process that counteracts a change in a system to maintain equilibrium.
Multiple Choice: Which hormone increases blood glucose levels? A) Insulin B) Glucagon C) Somatostatin
B) Glucagon
What are receptors in the context of homeostasis?
Cells or tissues that detect changes in the environment.
True or False: The body uses positive feedback to regulate blood pressure.
False
Fill in the blank: The _____ gland produces hormones that regulate metabolism.
thyroid
What is the function of the adrenal glands?
To produce hormones such as adrenaline and cortisol that help the body respond to stress.
Multiple Choice: Which part of the brain regulates thirst and hunger? A) Cerebellum B) Hypothalamus C) Medulla
B) Hypothalamus
What is the purpose of the kidneys in homeostasis?
To regulate water balance and remove waste products from the blood.
True or False: Sweating is a mechanism for cooling the body.
True
Fill in the blank: The _____ system is involved in the regulation of body temperature.
nervous
What is the primary function of the pancreas in homeostasis?
To regulate blood sugar levels by secreting insulin and glucagon.
Multiple Choice: Which condition results from prolonged high blood sugar levels? A) Hypoglycemia B) Diabetes C) Hyperthyroidism
B) Diabetes
What type of feedback mechanism is involved in childbirth?
Positive feedback
True or False: The skin plays no role in thermoregulation.
False
Fill in the blank: The _____ feedback loop enhances a change in the internal environment.
positive
What is the role of antidiuretic hormone (ADH)?
To regulate water retention in the kidneys.
Multiple Choice: Which of the following is NOT a factor that homeostasis regulates? A) Temperature B) Blood pressure C) Hair color
C) Hair color
What is the main effect of cortisol in the body?
To increase blood sugar levels and aid in stress response.
True or False: Hormones are chemical messengers that travel through the bloodstream.
True
Fill in the blank: The _____ system works alongside the nervous system to maintain homeostasis.
endocrine
