Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
HBS Muscles
| Question | Answer |
|---|---|
| Tendon | tough, fibrous, cord-like tissue that attaches a muscle to a bone or other structure |
| Skeletal Muscle | a specialized tissue that allows movement and is attached to bones by tendons |
| Cardiac Muscle | the thick middle layer of the heart that contracts to pump blood throughout the body |
| Smooth Muscle | a type of muscle tissue that is involuntary and non-striated, and is found in the walls of hollow organs |
| Sarcomere | the fundamental unit of muscle that is responsible for contraction |
| Sarcoplasmic Reticulum | a network of tubules and cisternae in muscle cells that stores and releases calcium ions to control muscle contraction and relaxatio |
| Calcium Ions (Ca+2) | a positively charged ion that's formed when a calcium atom loses two electrons (blood clotting) |
| Actin filaments | thin, flexible protein fibers that are a major component of the cytoskeleton in most cells |
| Myosin filaments | protein structures in muscle cells that are responsible for muscle contraction |
| Troponin | a protein found in heart and skeletal muscles that helps muscles contract |
| Tropomyosin | a protein that regulates the interaction between actin and myosin in muscle contraction |
| Adenosine Triphosphate (ATP) | the source of energy for use and storage at the cellular level |
| Endomysium | a thin layer of connective tissue that surrounds and protects each muscle fiber, or myofiber, within a muscle |
| Perimysium | a layer of connective tissue that surrounds bundles of muscle fibers, called fascicles, within a skeletal muscle |
| Myofibril | a rod-like organelle in a muscle cell that is made up of protein filaments and is responsible for muscle contraction |
| Fascicle | a bundle of skeletal muscle fibers running parallel to each other |
| Epimysium | the dense connective tissue that surrounds the entire muscle tissue |
| Muscle Fiber / Cell | the basic unit of muscle tissue |
| Muscle Rule 1 | Muscles must have at least 2 points of attachment |
| Muscle Rule 2 | The attachment that moves is called the Insertion; the attachment that remains stationary is the Origin |
| Muscle Rule 3 | Muscles must cross at least 1 joint |
| Muscle Rule 4 | Muscles work in opposing pairs: A muscle that decreases the angle of the joint is called a Flexor; a muscle that increases the angle of a joint is called an extensor |
| Muscle Rule 5 | Muscles can only pull / contract to get shorter. |
| Muscle Rule 6 | Macroscopic striations show the direction of muscle contraction. |
| Muscle Fatigue | a decrease in the ability of a muscle to generate force, resulting from muscle activity under load |
| Electromyogram (EMG) | a diagnostic procedure that measures the electrical activity of muscles in response to nerve stimulation |
| Tetany | a condition in which the central and peripheral nervous systems become hyperexcitable due to low levels of certain ions in the fluid around nerve cells |
Created by:
user-1720070
Popular Midwifery sets