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
Noah Lucas
Anatomy Ch 6 Muscles
| Question | Answer |
|---|---|
| Ability of skeletal muscle to shorten with force | Contractility |
| Capacity of skeletal muscle to respond to a stimulus | Excitability |
| Ability to be stretched | Extensibility |
| Ability to recoil to their original resting length after they have been stretched | Elasticity |
| Connective tissue sheath that surrounds each skeletal muscle | Epimysium |
| Connective tissue located outside the epimysium that surrounds and seperates muscles. | Fascia |
| Loose connective tissue that surrounds bundles called muscle fasciuli. | Perimysium |
| A single cylindrical muscle cell containing several nuclei. | Muscle Fiber |
| Connective tissue sheath surrounding each muscle fiber | Endomysium |
| Myofibrils consist of 2 major kinds of | Protein fibers |
| Thin myofilaments that resemble 2 minute strands of pearls twisted together | actin myofilaments |
| Thick myofilaments that resemble bundles of minute golf clubs. | Myosin myofilaments |
| Highly ordered units formed by actin and myosin, joined end to end to form the myofibril | Sarcomeres |
| Basic structural and functional unity of the muscle | Sarcomere |
| The outside of most cell membranes is positively charged compared to the inside of the cell membrane, which is negatively charged. That charge difference across the membrane is called | Resting membrane potential |
| Thoracic Musclus? | Involved in breathing |
| Sliding of actin myofilaments past myosin myofilaments during contraction? | Sliding filament mechanism |
| Brachioradialis? | Flexes and pronates forearm |
| latissimus dorsi? | Medially rotates and extends arm |
| Rotator cuff muscles? | Attaches humerus to scapula |
| A muscle fiber will not respond to stimulus until that stimulus reaches a level called? | threshold |
| Tendinous inscriptions | Connective tissue that crosses the rectus abdomins giving it a segmented appearance in a muscled person |
| Linea alba? | Extends from sternum to the Naval down to the pubis |
| Group of muscle on each side of back responsible for keeping back straight and body erect | Erector spinae |
| Rhomboids? | Draw scapula toward vertebral column |
| Deltoid? | Flexes, extends, and abducts the arm. |
| Pectoralis major? | "chest muscle" adducts and flexes the arm. |
| Pulls the scapula inferiorly | Pectoralis minor |
| Quiet breathing | Diaprham |
| Contraction of an entire muscle in response to a stimulus that causes the action potential in one or more muscle fibers | Muscle twitch |
| Elevate ribs during inspiration | External intercostals |
| Contract during force expiration | Internal intercostals |
| Extends forearm | Triceps brachii |
| Flexes and suppinates forearm | Biceps brachii |
| Primary flexer of the forearm | brachialis |
| Sternocleidomastoid (prime mover), lateral neck muscle, toricollis, platysma | Neck muscles |
| Extrensic tongue muscles | Moves the tongue |
| Intrinsuc tongue muscles | Changes shape of tongue |
| Intrinsic + extrensic tongue muscles | Tongue and Swallowing muscles |
| Mastication | Chewing |
| Responsible for frowning | Depressor-anguli oris |
| Responsible for sneering | Levator labii superioris |
| Responsible for smiling | zygomaticus |
| Flattens cheek | Buccinator |
| Puckers mouth | Orbiculi oris |
| Closes eyelids and causes crows feet | Orbicularis oculi |
| Raises eyebrows | Occipito frontalis |
| Single motor neuron and all the skeletal muscle fibers it innirates | motor unit |
| Each branch that connects to the muscle from a? | Neuromuscular junction |
| Charge difference across the membrane | Membrane Potential |
Created by:
rensho
Popular Anatomy sets