Chapter 6 muscles
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| Four major functional characteristics? | contractility, excitability, extensibility,elasticity
🗑
|
||||
| ability of skeletal muscle to respond to a stimulus? | Contractility
🗑
|
||||
| capacity of skeletal muscle muscle to respond to stimulus? | excitability
🗑
|
||||
| ability to be stretched | extensibility
🗑
|
||||
| ability to recoil | elasticity
🗑
|
||||
| What do muscles do? | produce heat essential for maintenance of normal body temp
🗑
|
||||
| Skeletal muscle is surrounded by? | epimysium
🗑
|
||||
| tissue located ouside of the epimysium? | Fascia
🗑
|
||||
| Muscle is composed of numerous visible bundles called? | fasciculi
🗑
|
||||
| Fasciculi is surrounded by? | perimysium
🗑
|
||||
| Single muscle cells? | fibers
🗑
|
||||
| Each fiber is surrounded by? | endomysium
🗑
|
||||
| thread like structure that extends from one end of the fiber to the other? | myofibrils
🗑
|
||||
| 2 major kinds of protein fibers? | actin myofilaments, myosin myofilaments
🗑
|
||||
| thin myofilaments | actin
🗑
|
||||
| thick myofilaments | myosin
🗑
|
||||
| Actin and myosin myofilaments form highly ordered units called? | sarcomeres
🗑
|
||||
| basic structural and functional unity of the muscle? | sarcomeres
🗑
|
||||
| Sarcomeres extend from? | z line to z line
🗑
|
||||
| The z line is an light area called? | an I band
🗑
|
||||
| I band contains? | actin
🗑
|
||||
| darker central region in each sarcomere? | A band
🗑
|
||||
| A band contains? | myosin
🗑
|
||||
| Charge difference across the membrane? | resting membrance potential
🗑
|
||||
| brief reversal back of the charge? | action potential
🗑
|
||||
| nerve cells that carry action potentials to skeletal muscle fibers? | motor neurons
🗑
|
||||
| Each branch that connects to the muscle forms? | neuromusclular junction
🗑
|
||||
| neuromusclular junction? | synapse
🗑
|
||||
| single motor neuron and all the skeletal muscle fibers it innervates? | motor unit
🗑
|
||||
| enlarged nerve terminal? | presynaptic terminal
🗑
|
||||
| space between the presynaptic terminal and the muscle cell is the? | synaptic cleft
🗑
|
||||
| each presynaptic terminal contanins? | synaptic vesicles
🗑
|
||||
| Synaptic vesicles secrete? | acetycholine
🗑
|
||||
| Sliding actin myofilaments past myosin myofilaments during contraction? | sliding filament mechanism
🗑
|
||||
| contraction of an entire muscle? | muscle twitch
🗑
|
||||
| muscle fiber will not respond to stimulus until stimulus reaches a level called? | threshold
🗑
|
||||
| time between application of a stimulus to a motor neuron and beginning of a contraction? | lag phase
🗑
|
||||
| time of contraction? | contraction phase
🗑
|
||||
| time during which the muscle relaxes? | relaxation phase
🗑
|
||||
| where muscles remain contracted without relaxing? | tetany
🗑
|
||||
| increase in number of motor units being activated is called? | recruitment
🗑
|
||||
| anaerobic respiration? | without oxygen
🗑
|
||||
| aerobic respiration? | with oxygen
🗑
|
||||
| the amount of oxygen needed in chemical reactions to covert lactic acid to glucose and to replenish the depleted stores of creatine phosphate stores in muscle smell | oxygen debt
🗑
|
||||
| when ATP is used during muscle contraction faster than it can be produced | Muscle fatigue
🗑
|
||||
| length of muscle does not change, but amount of tension increases during contraction process | isometric
🗑
|
||||
| amount of tension produced by the muscle is constant during contraction, but the length of the muscle changes | isotonic
🗑
|
||||
| constant tension produced by muscles of the body for long periods of time | muscle tone
🗑
|
||||
| contract quickly and fatigue quickly | fast-twitch fibers
🗑
|
||||
| contract more slowly and are more resistant to fatigue | Slow-twitch fibers
🗑
|
||||
| orgin(head) | most stationary end of the muscle
🗑
|
||||
| insertion | end of the muscle undergoing the greatest movement
🗑
|
||||
| portion of the muscle between the origin and insertion | belly
🗑
|
||||
| muscles that work together to accomplish specific movements | synergists
🗑
|
||||
| muscles that work in opposition to one another | antagonists
🗑
|
||||
| muscle that plays the major role in movement | prime mover
🗑
|
||||
| raises the eyebrows | occipito frontails
🗑
|
||||
| closes the eyelids | orbichloris oculi
🗑
|
||||
| puckers the lips | oribiculoris
🗑
|
||||
| flattens the cheeks | buccinator
🗑
|
||||
| smiliing muscles | zygomaticus
🗑
|
||||
| sneering | levator labii superoris
🗑
|
||||
| frowning | depressor angulioris
🗑
|
||||
| mastication | chewing
🗑
|
||||
| mastication is made of | temporalis and masseter
🗑
|
||||
| tongue muscles | Intrinsic, Extrinsic
🗑
|
||||
| changes shape of tongue | Intrinsic
🗑
|
||||
| moves tongue | Extrinsic
🗑
|
||||
| Neck muscles | Sternocleidomastoid
🗑
|
||||
| Prime mover: rotates and turns the head | Sternocleidomastoid
🗑
|
||||
| Toticollis | twisted neck
🗑
|
||||
| group of muscles on each side of the back. Responsible for keeping the back straight and the body erect. | Erector spinae
🗑
|
||||
| muscles that move the thorax | thoracic muscles
🗑
|
||||
| accomplishes quiet breathing. Dome-shaped muscle. Aids in breathing. | Diaphragm
🗑
|
||||
| contract during forced expiration | Internal intercostals
🗑
|
Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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
Created by:
ErinNoble34
Popular Anatomy sets