Podcast
Questions and Answers
How does high cholesterol contribute to the development of heart disease?
How does high cholesterol contribute to the development of heart disease?
- It restricts blood flow by blocking arteries, increasing the risk of heart disease. (correct)
- It thins the blood, making it harder for the heart to pump blood to the rest of the body.
- It causes inflammation in the heart, leading to an irregular heartbeat.
- It directly damages the heart muscle, reducing its ability to pump blood effectively.
What is the primary function of leukocytes within the blood?
What is the primary function of leukocytes within the blood?
- Transporting oxygen from the lungs to the rest of the body.
- Initiating the process of blood clotting to prevent excessive bleeding.
- Maintaining fluid balance and transporting hormones throughout the body.
- Fighting infections by identifying and destroying pathogens. (correct)
How does a low-fibre diet contribute to the development of colon cancer?
How does a low-fibre diet contribute to the development of colon cancer?
- It promotes the growth of harmful bacteria in the colon, which release carcinogenic toxins.
- It causes waste to build up in the large intestine, increasing exposure to harmful substances. (correct)
- It increases the rate of cell division in the colon, leading to cancerous mutations.
- It reduces the absorption of essential nutrients, weakening the immune system and making the colon more susceptible to cancer.
How does emphysema, a disorder of the respiratory system, primarily affect lung function?
How does emphysema, a disorder of the respiratory system, primarily affect lung function?
What is the primary cause of kidney failure in individuals who develop kidney stones?
What is the primary cause of kidney failure in individuals who develop kidney stones?
Flashcards
Blood Plasma
Blood Plasma
Liquid part of blood; makes up 55% of its volume, carrying cells and nutrients.
Blood Cell Functions
Blood Cell Functions
Red blood cells transport oxygen, white blood cells fight infection, and platelets help with clotting.
High Blood Pressure
High Blood Pressure
Elevated blood pressure; increases risk of heart attack and stroke.
Ulcer
Ulcer
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Bronchitis
Bronchitis
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Study Notes
- The document is titled "Body System and Your Health, Topic 1"
Blood
- Plasma makes up 55% of blood, and consists of liquid, nutrients, and waste.
- Blood cells make up 44% and carry oxygen.
- White blood cells make up less than 1% and fight infection.
- Platelets also make up less than 1% and help with blood clots afterwards.
Circulatory System
- Common causes of issues: Smoking.
- High blood pressure can lead to heart attack and stroke.
- High cholesterol also impacts the system.
- Prevention comes from a better diet, no smoking, more exercise, and less stress.
- A sphygmomanometer is used to measure blood pressure.
- Smoking damages the lining of arteries and weakens and stops the movement of blood to the heart.
- High cholesterol can cause a build up of fat, block arteries, and increase heart disease.
Digestive System
- Disorders may include colon cancer and ulcers.
- These can affect the colon (large intestine) and ulcers in the stomach or small intestine.
- Prevention is a high fibre diet.
- Colon cancer is caused by a low fibre diet, and the lack of fibre causes waste to build up in the large intestine.
- Ulcers can be caused by stress, smoking, excessive alcohol use, and cause a peptic ulcer (hole) in the stomach or small intestine.
Respiratory System
- Disorders include lung cancer and bronchitis.
- Common causes: Smoking, pollutants.
- Lung cancer is caused by smoking and pollutants.
- Bronchitis involves inflammation of ciliated cells in the residing or narrow airways.
- Mucus builds up, causing frequent coughs.
- Emphysema is an extreme bronchitis that doesn't go away, cilia can be damaged and die.
Excretory System
- Disorders of may include kidney stones.
- Kidney stones are caused by build up of waste in the kidneys, and the waste doesn't get filtered out and creates a stone.
- Kidney failure is caused by lack of removal of kidney stones.
- Patients undergo dialysis to filter the blood.
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Description
An overview of blood composition, the circulatory system, and the digestive system. It highlights factors affecting these systems, such as smoking, high blood pressure, and cholesterol, along with preventative measures and potential disorders.
