Musculoskeletal System Overview

False (B)

Brittle bones

<p>ACL</p> Signup and view all the answers

<p>Bone = Hard, dense tissue that provides structure Ligament = Tough tissue that connects bones at joints Cartilage = Flexible tissue that absorbs shock at joints Osteoporosis = Bone disorder characterized by brittle bones</p> Signup and view all the answers

<p>Bone disorder like osteoporosis (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Bone, Ligament, or Cartilage</p> Signup and view all the answers

<p>smooth</p> Signup and view all the answers

<p>They involve overstretching that can tear muscle fibers. (B)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>RICE</p> Signup and view all the answers

<p>extensor</p> Signup and view all the answers

<p>RICE and anti-inflammatories (C)</p> Signup and view all the answers

<p>Connective tissue (D)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>Arthritis</p> Signup and view all the answers

<p>contraction</p> Signup and view all the answers

<p>Skeletal Muscle = Voluntary and supports body movement Smooth Muscle = Involuntary and surrounds internal organs Cardiac Muscle = Unique features specific to the heart All Muscles = Contain actin and myosin</p> Signup and view all the answers

<p>Lactic acid buildup (C)</p> Signup and view all the answers

<p>False (B)</p> Signup and view all the answers

<p>To allow friction-free movement of bones</p> Signup and view all the answers

<p>oxygen</p> Signup and view all the answers

<p>Smooth Muscle (D)</p> Signup and view all the answers

The musculoskeletal system is an organ system that is made up of bones and muscle. Its function is to support the body, protect delicate organs and makes movement possible.

The system contains bones, muscles, tendons, and three types of connective tissue: bone, ligament, and cartilage.

Bone tissue is hard, dense, and made of bone cells within a matrix of minerals (calcium and phosphorus) and collagen fibers.

Canals within bones allow nerves and blood vessels to pass through the tissue.

Bones can break due to their hard and dense nature.

Ligaments are tough, elastic connective tissues that hold bones together at the joints. They provide stability to joints.

The ACL (anterior cruciate ligament) is a major ligament in the knee that connects the femur (thigh bone) and tibia (shin bone) to prevent instability in the knee joint.

Osteoporosis causes bones to become weak and brittle due to decreased bone density, often caused by poor calcium absorption or low vitamin D levels.

A sprained ankle is a strain, tear, or complete rupture of the ligaments (or tendons) in the ankle, often occurring due to sudden twisting or impact.

A muscle sprain, or "pull", occurs when a muscle is stretched beyond its limit, causing a tear in the muscle fibers.

The RICE principle is a treatment method for soft tissue injuries, including muscle sprains, tendonitis, and ligament injuries.

Tendons are strong, fibrous tissues that connect muscles to bones. They are less elastic than ligaments.

Tendonitis is an inflammation or swelling of a tendon, often caused by overuse or repetitive strain.

A tendon rupture is a complete or partial tear of a tendon, often requiring surgery.

Muscles work in pairs - flexors and extensors. Muscles cannot push, only pull. One muscle extends a limb, while the other flexes it.

A type of connective tissue found in joints, ears, nose, and between vertebrae. It's smooth, flexible, and resists structural changes.

The deterioration of cartilage in joints, causing bones to rub together, leading to inflammation and pain.

Long cells in muscles that contain proteins like actin and myosin, responsible for muscle contraction.

A protein in muscle fibers that, when activated, pulls on actin filaments, causing muscle contraction.

A protein in muscle fibers that myosin pulls on during muscle contraction.

Muscle type responsible for voluntary movement, like walking.

Muscle type surrounding internal organs, responsible for involuntary movements.

Muscle type found only in the heart, with specialized features for pumping blood.

Tiny tears in muscle fibers that occur during exercise, leading to muscle growth.

The burning sensation experienced during exercise caused by lactic acid build-up in muscles.