Muscular system
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
|
|
||||
|---|---|---|---|---|---|
| What are the functions of muscle tissue? | Body movement, heat production; Posture and support
🗑
|
||||
| Actin | Small, round proteins that form the backbone of the thin myofilaments
🗑
|
||||
| Myosin | Long proteins with globular heads; responsible for binding with the actin molecules and pulling the thin myofilaments closer together
🗑
|
||||
| Motor unit | One motor neuron and the muscle fibers that it innervates
🗑
|
||||
| Recruitment | Number of motor units activated to perform a given task
🗑
|
||||
| All-or-none law | Muscle fiber is stimulated by action potential from a nerve the entire fiber contracts
🗑
|
||||
| Muscle twitch | Single muscle contraction followed by relaxation of the muscle
🗑
|
||||
| Tetanus | Sustained muscle contraction
🗑
|
||||
| Muscle spasm | Tetanus
🗑
|
||||
| Isometric contraction | Muscle contracts but does not change length
🗑
|
||||
| Isotonic contraction | Muscle contracts and changes length
🗑
|
||||
| Concentric contraction | Muscle contracts and shortens
🗑
|
||||
| Eccentric contraction | Muscle contracts and lengthens
🗑
|
||||
| Agonist | Muscle responsible for movement
🗑
|
||||
| Prime mover | Agonist
🗑
|
||||
| Synergist | Assists in performing movement
🗑
|
||||
| Antagonist | Works against agonist
🗑
|
||||
| Tendon | Dense fibrous connective tissue that connects muscle to bone
🗑
|
||||
| Aponeurosis | Broad, flat, thin tendon
🗑
|
||||
| Origin | More stationary attachment site
🗑
|
||||
| Insertion | More moveable attatchment site
🗑
|
||||
| Muscle must cross a | Joint
🗑
|
||||
| Ligamnets connect | Bone to bone
🗑
|
||||
| Tendons connect | muscle to bone
🗑
|
||||
| Bursae | Fluid filled sack
🗑
|
||||
| The way actin and myosin are situated gives a ____ appearance | Striated
🗑
|
||||
| Sacromere | Functional unit of muscle
🗑
|
||||
| Contractile unit | Sacromere
🗑
|
||||
| Atrophy | Muscle gets smaller
🗑
|
||||
| Hypertrophy | Muscle gets very big
🗑
|
||||
| Strength training | Putting demand on muscles
🗑
|
||||
| Endurance training | For the long haul
🗑
|
||||
| Aerobic training | Endurance training
🗑
|
||||
| Anaerobic | Without oxygen
🗑
|
||||
| Aerobic | With oxygen
🗑
|
||||
| Sliding filament theory | SLC
🗑
|
||||
| SLC step 1 | Sodium sparks action potential (AP)
🗑
|
||||
| SLC step 2 | AP comes down the motor neuron causing acetylcholine (ACh) to be released into the neuromuscular junction
🗑
|
||||
| SLC step 3 | ACh reacts with the muscle fiber to create AP on the muscle fiber membrane
🗑
|
||||
| SLC step 4 | AP sweeps down the muscle fiber membrane and into the transverse tubules (T-tubules)
🗑
|
||||
| SLC step 5 | AP in the T-tubules causes the sarcoplasmic reticulum to release Ca2+ into the muscle filament (actin)
🗑
|
||||
| SLC step 6 | Ca2+ binds to troponin causing the troponin molecule to change shape and pull the tropomyosin off of the myosin binding sites on the actin proteins
🗑
|
||||
| SLC step 7 | Myosin heads bind to actin proteins
🗑
|
||||
| SLC step 8 | Myosin head pulls thin filaments within the sarcomere closer together performing a "power stroke"
🗑
|
||||
| SLC step 9 | ATP molecule binds to myosin head to release it from the actin protein
🗑
|
||||
| SLC step 10 | Energy within the ATP molecule is used to "recock" the myosin head
🗑
|
||||
| SLC step 11 | Steps 7-10 are repeated as long as there is AP from the motor neuron
🗑
|
||||
| Fast twitch fibers | White muscles, anaerobic, low blood supply, low endurance, non-postural
🗑
|
||||
| Slow twitch fibers | Red muscles, aerobic, high blood supply, high endurance, postural
🗑
|
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:
skpoem
Popular Massage Therapy sets