Human body systems chapter 1 Flashcards
Cell
the smallest unit that can live on its own and that makes up all living organisms and the tissues of the body
Tissues
A group or layer of cells that work together to perform a specific function
Organs
a collection of tissues that structurally form a functional unit specialized to perform a particular function.
Organ System
a collection of tissues that structurally form a functional unit specialized to perform a particular function.
Organism
something having many related parts that function together as a whole
Skeletal muscle
found throughout the body and functions to contract in response to a stimulus.
Nutrient
A chemical compound (such as protein, fat, carbohydrate, vitamin, or mineral) contained in foods
absorption
The process by which one thing absorbs or is absorbed by another.
gland
An organ that makes one or more substances, such as hormones, digestive juices, sweat, tears, saliva, or milk.
stimulus
a thing or event that evokes a specific functional reaction in an organ or tissue.
hormone
chemical substances that act like messenger molecules in the body
Homeostasis
A state of balance among all the body systems needed for the body to survive and function correctly.
The ___________ forms the outside of the cell
cell membrane
A _________________ is a chemical that can control one or more body processes
Hormones
Hinge joint
elbow and knee ect.
What is a joint that works like a hinge
Knee elbow ect.
When you touch a hot pan and take it off how did your nervous system function
It had a stimulus reaction.
Under what circumstance would your body release adrenaline
sudden stress
Endocrine system
made up of glands that make hormones. Hormones are the body’s chemical messengers. They carry information and instructions from one set of cells to another.
Bone tissue and fat tissue are examples of
Connective tissue
How is a tissue different from a organ?
Tissue is built up of cells but organs are made up of tissue. They are both apart of the human body.
What is the smallest level of body organization?
cells
Cells that have the same function form ________.
tissues
Your elbow is an example of a _______ joint.
hinge
Your body systems work together to maintain steady internal conditions, or ___________.
Homeostasis
A signal in the environment that makes you react is called a __________.
Stimulus
A _______ is what your body does in reaction to a stimulus.
responce
Nutrients move from the digestive system into the bloodstream by ___________.
Absorption
The reaction of your body to possibly threatening, challenging or uncomfortable events is called __________.
stress
A substance that you get from food that your body needs to carry out processes.
Nutrients
this system brings in oxygen and removes carbon dioxide from the body.
Repository system
This system supports the body, protects internal organs, allows movement and produces blood cells.
skeletal system
