Chapter 6- Muscles Word Scramble
|
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
| Question | Answer |
| What is the ability of skeletal muscle to shorten with force? | contractility |
| What is the capacity of skeletal muscle to respond to a stimulus? | excitability |
| What is the ability to be stretched? | extensibility |
| What is the ability to recoil to original length? | elasticity |
| Each skeletal muscle is surrounded by a connective tissue sheath called the _______. | epimysium |
| __________ is another connective tissue located outside the epimysium that surrounds and separates the muscle. | fascia |
| -thin myofilaments -2 strands of pearls twisted together | Actin Myofilaments |
| -thick myofiliments - bundles of mini golf clubs | Myosin Myofilaments |
| Actin and myosin form highly ordered units called ________, which are joined end to end to form the myofibril. | sarcomeres |
| What is the basic structural and functional unity of the muscle? | sarcomere |
| Where is the actin in the diagram we drew? | around the z line in the i band |
| What kind of charge does the outside of the cell membrane have? | positive |
| What kind of charge does the inside have? | negative |
| what are nerve cells that carry action potentials to skeletal muscle fibers? | motor neurons |
| adenosine triphosphate | ATP |
| what is tetany? | where muscle remains contracted without relaxing |
| what is anaerobic respiration? | without oxygen |
| what is aerobic respiration? | with oxygen, more efficient |
| The ________ is the amount of oxygen needed in chemical reactions to convert lactic acid to glucose and to replenish the depleted stores of creatine phosphate stores in muscle cells. | oxygen debt |
| muscle cells | muscle fibers |
| isometric | equal distance ex. stacking books on your hand |
| isotonic | equal tension ex. throwing bowling balls |
| which type of muscle fibers contract and fatigue quickly? and what is an example of this? | fast twitch fibers and the white meat of a chicken breast |
| which type of fiber contracts slower and is more resistant to fatigue? also give an example of this. | slow twitch fibers and dark meat of a ducks breast |
| the ______ (head) is the most stationary end of the muscle. | origin |
| muscles that work together to accomplish specific movements are called _________. | synergists |
| how are some ways muscles named? | location, size, oreintation of fibers, shape, origin, insertion, and function. |
| raises the eyebrows | occipitofrontalis |
| closes eyelids and causes crows feet | orbicularis oculi |
| puckers the lips | orbicularis oris |
| mastication | chewing |
| how many pairs of mastication muscles are there? | 4 |
| the sliding of actin myofilaments past myosin myofilaments during contraction is called the __________. | sliding filament mechanism |
| the time between application of a stimulus to a motor neuron and the beginning of a contraction is called the _______. | lag phase |
| what is the increase in umber of motor units being activated is called _________. | recruitment |
| the process in which a muscle becomes shorter and tighter | contraction |
| muscle cell that makes up the muscle | muscle fibers |
| muscle connected to the skeletal system | skeletal muscle |
| layer of areolar connective tissue that ensheaths each individual myocyte | endomysium |
| only found in heart, pumps blood through body | cardiac muscle |
| transparent tubular sheath which envelops the fibers of skeletal muscles | sarcolemma |
| regulates calcium ion concentration | sarcoplasmic reticulum |
| part of a nerve cell where impulses are conducted | axon |
| decline in muscles ability to generate force | muscle fatigue |
| What did the tennis ball experiment represent? | muscle fatigue |
| What is muscle that stabilizes? | fixators |
| Each presynaptic terminal contains synaptic vesicles that secrete a neurotransmitter called acetylcholine. true or false? | true |
| The H and I bands shorten, but the A bands do change in length. true or false? | false |
| A muscle fiber will not respond to stimulus until that stimulus reaches a level called ________, at which point the muscle fiber will contract maximally. | threshold |
| A muscle fiber will not respond to stimulus until that stimulus reaches a level called threshold, at which point the muscle fiber will contract maximally. This phenomenon is called the _______________. | all-or-none response |
| the time of contraction is the _________. | contraction phase |
| Where is ATP produced? | mitochondria |
| ATP is short lived and very unstable. t/f? | true |
| ATP turns into ADP plus phosphate. t/f? | true |
| It is necessary for muscle cells to constantly produce ATP. When at rest they can’t stockpile ATP but they can store another high-energy molecule, called ___________. | creatine phosphate |
| what flattens the cheeks? | "trumpter's muscle" buccinator |
| smiling muscle | zygomaticus |
| sneering | levator labii superioris |
| frowning | depressor anguli oris |
| what changes the shape of the tongue? | intrinsic tongue muscles |
| what moves the tongue? | extrinsic tongue muscles |
| lateral neck muscle and prime mover...rotates and abducts the head | sternocleidomastoid |
| muscles that move the thorax | thoracic muscles |
| elevates the ribs during inspiration | external intercostals |
| contract during forced expiration | internal intercostals |
| tendious area of the abdominal wall | linea alba |
| on each side of the linea alba | rectus abdominis muscle |
| adducts and flexes the arm | pectoralis major |
| medially rotates, adducts, powerfully extends the arm 'swimmer muscles" | latissimus dorsi |
| major abductor of the upper limb | deltoid |
| extends the forearm | triceps brachii |
| flexes the forearm | biceps brachii |
| flexes forearm | brachialis |
| flexes and supinates the forearm | brachioradialsis |
| flexes the wrist | flexor carpi |
Created by:
hjcoope2
Popular Anatomy sets