Homeostasis
What is the term for the stable internal environment of an organism?
homeostasis
What is the first step in the stimulus-response model?
Stimulus
What are the 4 main parts of the digestive system.
mouth, esophagus, stomach, small intestine,
What is the basic unit of life?
A Cell
What system is responsible for transporting blood throughout the body?
the circulatory system
What are the two environments that organisms must maintain?
internal environment and external environment?
Distinguish between negative and positive feedback systems.
negative feedback reduces the effect of the stimulus, while positive feedback amplifies it
What is the difference between chemical and mechanical digestion?
mechanical digestion involves physical breakdown, while chemical digestion involves enzymatic breakdown
What type of tissue is responsible for movement?
muscle tissue
Which system is primarily responsible for gas exchange?
the respiratory system
How do the nervous and endocrine systems work together to maintain homeostasis?
by sending signals and hormones to regulate body functions
Name the five stages of the stimulus-response model.
stimulus, receptor, control center, effector, and response
Where does chemical digestion primarily occur?
In the stomach and small intestine
Name one function of epithelial tissue.
protection, absorption, or secretion
What is the main function of the immune system?
to protect the body against infections and diseases
Define homeostasis and give an example of its importance.
the process of maintaining a stable internal environment despite external changes
Give an example of a negative feedback system in the human body.
temperature regulation
Recall that glucose comes from what type of food we consume?
carbohydrates
What is the difference between prokaryotic and eukaryotic cells?
prokaryotic cells lack a nucleus, while eukaryotic cells have a nucleus?
Name the system that includes the brain and spinal cord.
the nervous system
Explain how feedback systems contribute to homeostasis.
They are mechanisms that help the body respond to changes, including negative and positive feedback
Explain how the stimulus-response model can be applied to homeostasis.
by illustrating how the body detects and responds to changes to maintain stability
Explain the role of enzymes in the digestive system.
substances that speed up the chemical reactions for digestion
Explain the role of stem cells in tissues.
cells that can differentiate into various types of cells and help in tissue repair and regeneration
Explain how the endocrine system helps regulate body functions.
by releasing hormones into the bloodstream to control various processes