Skeleton
The skeletal system is the body's internal framework, consisting of 206 bones in the average adult human. It provides structure and support, allowing us to stand upright and move with ease. This framework also protects our vital organs, like the brain, heart, and lungs, by encasing them in hard, protective barriers such as the skull and ribcage.
Beyond support and protection, the skeleton plays a crucial role in producing blood cells. Bone marrow, found in the cavities of certain bones, is a vital tissue that generates red blood cells, white blood cells, and platelets. These components are essential for oxygen transport, immune defense, and blood clotting.
The skeleton also serves as a mineral reservoir. Calcium and phosphorus, necessary for healthy bone maintenance and various biochemical processes, are stored and released as needed. Joints, the meeting points between bones, enable a range of movements facilitated by muscles and tendons.
In children and adolescents, the skeleton undergoes growth through a process called ossification, where cartilage is gradually replaced by bone. This allows young bodies to increase in height and develop into their full adult structure, maintaining bone health as they age.
An ABG (arterial blood gas) test measures levels of oxygen, carbon dioxide, and acidity in the blood to assess lung and kidney function.
Absence from work is when an employee is not present during scheduled working hours due to various reasons like illness or personal commitments.
Acetaminophen is a common medication used to relieve pain and reduce fever, often found in over-the-counter and prescription products.
Acne is a common skin condition that occurs when hair follicles become clogged with oil and dead skin cells, leading to pimples and other lesions.
Acute Coronary Syndrome (ACS) is a serious heart condition where blood flow to the heart is suddenly reduced, requiring immediate medical attention.
"Acute" refers to a medical condition that appears suddenly and resolves over a short time.
Acyclovir is a medication used to treat infections caused by certain viruses like herpes and shingles, reducing the severity and duration of symptoms.
Adalimumab is a medication used to treat inflammatory conditions by reducing inflammation through targeting specific proteins in the body.
Addiction is a compulsive engagement with substances or behaviors that negatively impact one's life.
Addison's disease is a rare condition leading to insufficient hormone production by the adrenal glands, causing symptoms like fatigue and low blood pressure.
ADHD is a common condition affecting attention, impulse control, and activity level, characterized by symptoms like distractibility, impulsivity, and restlessness.
ADL (activities of daily living) refers to essential daily self-care tasks, crucial for maintaining independence and well-being.
The adrenal glands are small, triangle-shaped organs on top of the kidneys that produce hormones essential for stress response, metabolism, and blood pressure regulation.
Adrenaline (epinephrine) is a hormone and medication that helps the body respond to stress and is used in medical emergencies, like severe allergic reactions.
An allergen is a substance that can trigger an allergic reaction in certain people.
Allergies are the immune system's overreaction to typically harmless substances such as pollen or certain foods, causing symptoms from sneezing to potential severe reactions.
An allergist is a medical specialist who diagnoses and treats allergies and related immune system reactions.
An allergy is an immune system response to a harmless substance, mistakenly identified as a threat.
ALP (alkaline phosphatase) is an enzyme found in the body that helps in protein breakdown, with its levels indicating liver and bone health.
Alprazolam is a medication used to treat anxiety and panic disorders by calming the brain through its effects on natural chemicals in the body.
Filter