Circulatory System
This system's primary function is to transport oxygen, nutrients, hormones, and waste products throughout the body.
Circulatory System
Which system delivers oxygen to muscles during physical activity?
Respiratory System
Which organs are part of the digestive system?
Mouth and stomach, lungs and airways, heart and vessels, or eyes and optic nerves
How do sound waves enter the auditory system?
Ear Canal
What is homeostasis?
The body's ability to maintain a stable internal environment
This organ acts as a pump to push blood through vessels.
Heart
In the lungs, gas enters the bloodstream while what gas is removed?
Oxygen in Carbon Dioxide Out
What is the role of enzymes in digestion?
Break down nutrients during chemical digestion
In the inner ear, this structure converts vibrations into electrical signals.
cochlea
What response is typical when the body is cold?
Shivering
During physical exercise, the heart rate does this to deliver blood more efficiently.
Increases
During physical activity, the respiratory system adapts by changing breathing rate and depth in this way.
Increase breathing and depth rate
Give one example of mechanical digestion and one example of chemical digestion.
Chewing (mechanical) and enzymes in saliva or stomach acid (chemical)?
In the optical system, which structure converts light into electrical signals?
Retina
When exposed to heat, the body increases this process and increases blood flow to the skin to help lose heat.
Sweating increases and increased blood flow to the skin
Name two types of blood vessels and state their roles.
Arteries - Carry blood away from heart
Veins - Carry blood toward the heart
Identify the path air goes to for the site of gas exchange in the lungs.
Nose/ Mouth
Explain why nutrients must be broken down into smaller molecules before absorption
Larger food molecules must be broken into small parts so they can pass through the cells of the digestive tract into the bloodstream for use by the body.
What does 20/20 vision describe
What is normal visual acuity at a standard distance of 20 feet
Name one way the body can get excessively hot and one way it can get excessively cold
High environmental temperature, strenuous exercise without adequate cooling; excessive cold: exposure to low temperatures without insulation or immersion in cold water.
How does the circulatory system and respiratory system work together during exercise?
Oxygen into the lungs to diffuse into the blood.
Describe how partial pressure differences help oxygen move from the alveoli into blood
Oxygen is higher in the alveoli than in the blood; diffusion moves it down that gradient into capillaries
How are carbohydrates broken doesn't and absorbed?
mouth with salivary amylase breaking starch into smaller sugars, continues in the small intestine with pancreatic enzymes and brush-border enzymes producing monosaccharides which are absorbed by intestinal cells and transported into the blood
What was the class vision score?
20/40
Tell me what one of the following jobs does: Engineer, Biologist, Environmental Scientist, Medical Scientist
Engineer — designs and builds solutions using scientific principles; Biologist — studies living organisms and their interactions; Environmental Scientist — examines environmental issues and conservation; Medical Scientist — conducts research to improve human health.)