Chapter 10 Muscular Tissue
About this set
Created by:
AmyTran on November 23, 2009
Subjects:
anatomy, anatomy and physiology
Description:
WARNING: some of the questions/ answers are really specific.
Log in to favorite or report as inappropriate.
Order by
55 terms
Terms | Definitions |
|---|---|
 epi | upon, on or above |
| peri | around |
| endo | within, inside |
| myo | muscle |
| bi | two |
| tachy | rapid |
| brady | slow |
| skeletal, cardiac, smooth | three types of muscle |
| skeletal muscles | named because these muscles move bone |
| skeletal muscle | striated and voluntary |
| striations | alternating light and dark bands as seen through a microscope |
| voluntary | conscious control of muscle |
| diaphragm | controlled subconsciously |
| cardiac | type of muscle tissue found only in the heart |
| cardiac | striated and involuntary |
| pacemaker | contraction of the heart is initiated by a node called a ___________ |
| smooth | located in the walls of hollow internal structures |
| BV, airways, many organs | some locations where smooth muscle is found |
| smooth | lacks striations and is involuntary |
| producing body movements, stabilizing body positions, moving substances within the body, generating heat | The four main functions of muscular tissue |
| excitability, contractility, extensibility, elasticity | The four main properties of muscle tissue that enables a muscle to function |
| Fascia | dense sheet or broad band of irregular CT that surounds muscles |
| epimysium | the outermost layer of muscle tissue |
| perimysium | surrounds numerous bundles of fascicles |
| endomysium | separates individual muscle fibers from one another |
| tendon | cord that attach a muscle to a bone |
| aponeurosis | broad, flattened tendon (attach the muscle to the structures that they move) |
| somatic motor neurons | neurons that stimulate skeletal muscle to contract |
| axon | a part of the somatic motor neuron that branches many times |
| skeletal muscle fiber | each branch of an axon extends to a different ______________ |
| lifetime | how long do muscle cells last? |
| hypertrophy | process of muscle cell growth |
| testosterone, human growth hormone | These two hormones stimulate hypertrophy |
| satellite cells | retain the capactiy to regenerate damaged muscle fibers |
| sarcolemma | the plasma membrane of a muscle cell |
| transverse (T tubules) | these tunnel in from the plasma membrane |
| action potentials | These tunnel through the T tubules |
| sarcoplasm | the cytoplasm of a muscle fiber |
| Glycogen, myoglobin | what are two components of Sarcoplasm? |
| glycogen | Found in sarcoplasm; is used for ATP synthesis |
| myoglobin | Found in the sarcoplasm; releases oxygen when it is needed for ATP synthesis |
| Myofibrils | thread like strucutres which have a contractile function |
| sarcoplasmic reticulum | membraneous sacs which encircle each myofibril |
| sarcoplasmic reticulum | stores calcium ions and releases C+ ions to trigger muscle contraction |
| filaments | function in the contractile process |
| thick (myosin), thin (actin) | two types of muscle filaments |
| 2:1 | what is the ratio of thin filaments to thick filaments? |
| sarcomeres | compartments of arranged filaments |
| sarcomeres | the basic functional unit of a myofibril |
| z disc | separate one sarcomere from the next |
| A band | darker middle part of the sarcomere |
| I band | lighter part of sarcomere that contains thin filaments but no thick filaments |
| I band | the Z discs pass through the center of the ________ |
| H Zone | center of each A band which contains thick but no thin filaments |
| M Line | supports proteins that hold the thick filaments together in the H zone |
First Time Here?
Welcome to Quizlet, a fun, free place to study. Try these flashcards, find others to study, or make your own.