Homeostatic Mechanisms
Biology ⇒ Biological Systems and Homeostasis
Homeostatic Mechanisms starts at 7 and continues till grade 12.
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A person eats a large meal high in sugar. Describe the homeostatic response that occurs in the body.
A person runs a marathon and starts to sweat heavily. What is the main purpose of this response?
Describe how the body responds to a decrease in external temperature to maintain homeostasis.
Describe how the body responds to high carbon dioxide levels in the blood.
Describe the role of the skin in thermoregulation.
Describe what happens if homeostatic mechanisms fail in the human body.
A person eats a large meal high in sugar. Describe the homeostatic response that occurs in the body.
A person runs a marathon and starts to sweat heavily. What is the main purpose of this response?
Which hormone lowers blood glucose levels? (1) Glucagon (2) Insulin (3) Adrenaline (4) Thyroxine
Which of the following best describes a feedback loop? (1) A linear process (2) A circular process where the output influences the input (3) A random process (4) An irreversible process
Which of the following best describes the function of a control center in a homeostatic system? (1) Detects changes (2) Processes information and determines response (3) Carries out a response (4) Stores nutrients
Which of the following is a function of the effector in a homeostatic system? (1) Detecting changes (2) Sending signals to the brain (3) Carrying out a response (4) Storing information
Fill in the blank: The __________ acts as the control center in most homeostatic mechanisms in animals.
Fill in the blank: The __________ detects changes in the environment and sends information to the control center.
Fill in the blank: The hormone __________ helps the kidneys reabsorb water when the body is dehydrated.
Fill in the blank: The hormone __________ is released when blood glucose levels are too low.
True or False: Blood pressure is regulated by homeostatic mechanisms.
True or False: Homeostatic mechanisms are only activated when there is a change from the normal state.
True or False: Homeostatic mechanisms can involve both the nervous and endocrine systems.
True or False: Homeostatic mechanisms only operate in animals, not in plants.
