BI2024

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Class notes

How are the lungs structured to facilitate gas exchange
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3

March 2023

2022/2023
The lungs are the primary organs of respiration in humans, responsible for exchanging gases between the body and the environment. They are composed of a complex network of airways, alveoli (small air sacs), and blood vessels. The air we breathe in enters the lungs through the trachea, which divides into two bronchi that lead to the lungs. These bronchi then divide into smaller bronchioles, which eventually lead to the alveoli. The alveoli are the site of gas exchange, where oxygen from the ai...
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Class notes

How does the urinary system regulate electrolyte balance in the body?
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1

March 2023

2022/2023
The urinary system plays a critical role in regulating electrolyte balance in the body. Electrolytes are minerals, such as sodium, potassium, chloride, and bicarbonate, that are necessary for proper cellular function. The kidneys filter electrolytes from the blood and either reabsorb them back into the body or excrete them in urine, depending on the body's needs. This process is tightly regulated by hormones, such as aldosterone and antidiuretic hormone (ADH), which control the reabsorption of s...
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How does the immune system recognize and respond to foreign pathogens to protect the body from infection?
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3

March 2023

2022/2023
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How does the cardiovascular system transport blood, nutrients, and oxygen throughout the body?
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3

March 2023

2022/2023
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How do the different parts of the eye (e.g. cornea, iris, lens) work together to facilitate vision?
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March 2023

2022/2023
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What is the structure and function of the different types of neurons in the nervous system?
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3

March 2023

2022/2023
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How does the digestive system extract nutrients from food and eliminate waste products from the body?
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2

March 2023

2022/2023
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What is the role of the liver in the body's metabolism and detoxification?
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2

March 2023

2022/2023
The liver plays a vital role in the body's metabolism and detoxification processes. It is responsible for breaking down and processing nutrients from food, producing bile to aid in digestion, and filtering out harmful substances from the blood. The liver also helps to metabolize medications and drugs, converting them into forms that can be excreted from the body. Additionally, the liver plays a critical role in the body's detoxification processes by removing toxins and waste products from the bl...
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Class notes

What is the structure and function of the kidneys?
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3

March 2023

2022/2023
The kidneys are a pair of bean-shaped organs located in the lower back, just below the ribcage. They are responsible for a variety of important functions in the body, including filtering waste products from the blood, regulating fluid and electrolyte balance, and producing hormones that help control blood pressure and stimulate the production of red blood cells. The kidneys consist of tiny filtering units called nephrons, which are responsible for filtering waste products and excess fluids from ...
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How does the skeletal system provide support and protection for the body?
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1

March 2023

2022/2023
The skeletal system is a complex network of bones, joints, and connective tissues that provide support and protection for the body. The bones serve as a rigid framework that gives the body its shape and structure, while also providing support for muscles and organs. Additionally, the skeletal system protects vital organs such as the brain, heart, and lungs by forming a strong, bony barrier around them. Furthermore, the bones also play a crucial role in movement, providing attachment points for m...
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