Levels of Organization
A group of cells working together to complete a specific function.
What is a tissue?
The part of the digestive system that absorbs water.
What is the large intestine?
The liquid part of blood that contains vitamins, minerals, nutrients, and water.
What is plasma?
A nervous system response always starts with this.
What is a stimulus?
Describe how the body maintains homeostasis when you are cold.
Shivering creates body heat.
The smallest unit of life.
What is a cell?
This nutrient helps build and repair the body.
What are proteins?
The part of blood that delivers oxygen.
What are red blood cells?
The brain and spinal cord make up this part of the nervous system.
What is the central nervous system?
Describe how your body maintains homeostasis when you are too warm.
You sweat to cool down.
A group of tissues working together to perform a specific function.
What is an organ?
This organ of the digestive system does peristalsis to move food into the stomach.
What is the esophagus?
This part of the blood fights diseases.
What are white blood cells?
These neurons send signals from the skin, eyes, nose, ears, or mouth, to the brain.
What are sensory neurons?
Explain one example of homeostasis.
Answers vary.
List the following levels of organization in order from smallest to largest: Organ, Cell, Tissue, Organism, Organ System
Cell --> Tissue --> Organ --> Organ System --> Organism
Identify the building blocks of proteins, lipids, and carbohydrates.
Proteins - Amino acids
Lipids - Fatty acids
Carbohydrates - Sugars/glucose
What does deoxygenated mean?
Having no oxygen.
The neurons make up this part of the nervous system.
What is the peripheral nervous system?
Define homeostasis.
The body's ability to maintain stable internal conditions despite changes in the environment.
Choose one tissue from the animal tissue lab (nervous, lung, bone, cardiac muscle) and describe how the structure of the cells supported the function of the tissue or organ.
Nervous: Long branched cells make it possible for nervous tissue to send signals long distances throughout the whole body.
Bone: Compact - Strong bones, Air pockets - Allowed the cells to get oxygen
Lung - Large air pockets allowed for gas exchange
Cardiac muscle - Branched and tightly connected cells allow for the cardiac muscle tissue/heart to beat all at once.
How do the structure of the villi support the function of the small intestine?
The villi increase the surface area creating more space for food to be absorbed in the small intestine.
Describe the pathway of blood during pulmonary circulation. Indicate when the blood is oxygenated and when blood is deoxygenated.
Heart --> deoxygenated blood travels to the lungs --> blood becomes oxygenated --> oxygenated blood returns to the heart.
These neurons send information from the brain to the muscles of the body.
What are motor neurons?
Final Jeopardy:
Describe the path food takes as it travels through the body.
Include at least 5 organs of the digestive system.
Mouth --> esophagus --> stomach --> small intestine --> large intestine