Chapter 24 Flashcards
Describe the source of Carbon Dioxide (CO2) in the blood and how it affects the pH of the blood.
- Carbon Dioxide comes from cells
2. More CO2 makes the blood acid
Describe two mechanisms the body uses to get rid of excess heat. How does the body preserve heat when it is cold?
- Heart rate increases to move blood.
- Sweating increases to help cool blood & body.
- Muscular activity & shivering
Why isn’t it a good idea to work out on a hot day right after a big lunch?
Because you catch cramps & the blood doesn’t know what to do.
Describe the functions of the nose mouth, and trachea in respiration.
They modify the humidity and temperature of the air & clean the air as it passes.
How does the body alert the respiratory system when more oxygen is needed?
You started breathing heavier.
Describe three kinds of problems of the circulatory and respiratory system that lead to serious chronic disease.
- Emphysemia
- Asthma
- Heart Failure
What kinds of wastes are removed by the kidneys?
- Water
- Salts
- Hydrogen ions
- Toxins
- Waste molecules
Heart
The muscular pump that forces blood through the blood vessels of the body.
Lung
Organs of the body that allow gas exchange to take place between air and blood.
Kidney
The primary organs involved in regulating blood levels of water, hydrogen ions, salt, and urea.
Tiny sacs found in the lungs; where gas exchange takes place.
Alveoli
The blood vessels that carry blood away from the heart.
Artery
The thinnest blood vessel that exchanges materials between the blood & tissues that surround these vessels.
Capillary
The water matrix that contains the molecules and cells in the blood.
Plasma
Filter, detoxifies, and modifies anything that goes through it.
Liver
Thin-walled sacs of the heart that receive blood from the veins of the body and empty into the ventricles.
Atria
The powerful muscular chambers of the heart whose contractions force blood to flow through the arteries to all parts of the body.
Ventricle
Tiny tubules that are functional units of kidneys.
Nephron
Tiny fingerlike projections in the lining of the small intestine that increases the surface area for absorption.
Villi
The pressure generated in a large artery when the ventricles of the heart rate.
Systolic Blood Pressure
The pressure present in a large artery when the heart is not contracting.
Diastolic Blood Pressure
