BI2024
College of medicine and jnm hospital
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How do the sense organs (eyes, ears, nose, tongue, and skin) transmit sensory information to the brain?
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---3March 20232022/2023
- The sense organs play a vital role in our ability to perceive and respond to our environment. When these organs are stimulated by external stimuli such as light, sound, odor, taste, or touch, they send signals to the brain through specialized nerve cells called sensory receptors. These receptors convert the sensory information into electrical signals, which are transmitted along sensory neurons to the central nervous system. The sensory neurons then synapse with other neurons in specific regions...
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How does the respiratory system allow us to breathe in oxygen and exhale carbon dioxide?
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---1March 20232022/2023
- The respiratory system is responsible for bringing oxygen into the body and expelling carbon dioxide. Oxygen is taken in through the nose or mouth and travels down the trachea into the lungs where it is exchanged with carbon dioxide through tiny air sacs called alveoli. The oxygen is then transported to the body's cells while the carbon dioxide is carried back to the lungs to be exhaled out of the body.
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How does the lymphatic system protect the body from infection and disease?
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---2March 20232022/2023
- The lymphatic system is a network of vessels and organs that helps protect the body from infections and diseases. It does so by filtering out harmful pathogens, such as bacteria and viruses, from the lymphatic fluid and producing specialized white blood cells called lymphocytes, which can recognize and destroy these pathogens.
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What are the different lobes and regions of the human brain and what are their functions?
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---2March 20232022/2023
- The human brain is divided into four main lobes: the frontal, parietal, temporal, and occipital lobes. Each lobe has specific regions that control different functions such as movement, sensation, perception, language, memory, and emotion.
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What are the different parts of the ear and how do they contribute to hearing and balance?
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---3March 20232022/2023
- The ear has three main parts: the outer ear, middle ear, and inner ear. The outer ear collects sound waves and directs them to the eardrum in the middle ear, which then vibrates and transmits sound to the inner ear. The inner ear contains the cochlea, which converts sound waves into electrical signals that are sent to the brain for processing. The inner ear also contains the vestibular system, which is responsible for balance and spatial orientation.
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