Presentation on theme: "Muscular System Quiz (This is an incomplete study guide"— Presentation transcript:
1Muscular System Quiz (This is an incomplete study guide Muscular System Quiz (This is an incomplete study guide. Also review your notes, labs and the power points found on-line.
2Learning Target: Compare skeletal, smooth and cardiac muscle cells and tissue. (knowledge)
3Muscle Cells… Type Striations? Shape Nuclei Contractions Function SmoothNoPointed on both ends1Involuntary, slowcontractions push materials through hollow organsCardiacYesIrregular1-2Involuntary, rhythmicContraction of heartSkeletalCylindricalManyVoluntary, quick, forcefulFacial expression, movement of skeletal structures
4Identifying Types of Muscle Tissue SmoothCardiacSkeletal
5Match Types of Tissues With Their Functions Transmits impulses and messagesAllows heart to pump bloodAllows internal organs and arteries to contractAllows for movement of bones at jointsSupplies nutrients and removes wastesSeparates, covers and holds muscles in place____ Nervous Tissue____ Skeletal Muscle Tissue____ Blood____ Smooth Muscle Tissue____ Connective Tissue____ Cardiac Muscle TissueADECFB
6Learning Target: Identify the major parts of skeletal muscle fiber and the function of each part. (knowledge)
11Learning Target: Define the terms action, origin, and insertion Learning Target: Define the terms action, origin, and insertion. (knowledge)
12Fill in the BlankThe location where the muscle is attached to the relatively immovable end of the bone is called the ______. The _________ is the end of the muscle that is attached to the ________ bone.immovableinsertionmovableorigin
13Truth or BolognaT/B Muscles have to work in pairs so that a muscle doesn’t get stuck in a certain position. T/B A ligament attaches muscle to muscle.bone to bone
14Learning Target: State the source of energy, cause, steps and final result of a muscle fiber contraction. (knowledge)
15Muscle Contractions True T/B Muscle contractions occur when a nerve impulse releases acetylcholine into muscle fibers. What is the energy source for a muscle contraction? a. ADP b. ATP c. calciumTrue
16Sliding Filament Theory Which state does this picture represent?Resting
17Step 1: Action potential A nerve action potential releases acetylcholine/ADP into the synaptic cleft opening the Na+ channels.Action potential spreads across synaptic cleft/sarcolemma releasing CA into the sarcoplasma.Step 2: Myosin-actin bindingCa/Na+ binds to troponinA shape change in troponin moves tropomyocin out of the way of myosin/actin binding siteActin and myosin bind using energy from cleaved ADP/ATP
18Step 4: ATP binding and actin-myosin release Step 3: Power StrokeSide arms pivot so myosin and actin slide by each other shortening the ______________ and P released (low energy)Step 4: ATP binding and actin-myosin releaseA different ____ molecule binds to the active site_______ releasedADPactinsarcomereATP
19What step does this picture represent? Step 5: ATP cleavage1. Return to high energy state2. Cycle will repeat if calcium is still available
20What 3 physical changes take place when a skeletal muscle contracts. A What 3 physical changes take place when a skeletal muscle contracts? A. becomes harder B. gets shorter C. diameter increases D. diameter decreases
21Muscle CrampsT/B When calcium is not available the muscle stays contracted which causes a muscle cramp.Bologna – when ATP isn’t availablethe muscle cramps
22Rigor MortisT/B Rigor mortis is a stiffening of the body because of continuous muscle contraction after death.TrueWhy does rigor mortis occur?a. lack of ATP productionb. high supply of Ca ionsc. low supply of Ca ionsd. a & b
23Learning Target: Interpret data from an electromyogram. (skill)
24What is an EMG? An EMG is a graphical recording of muscle activity/electrical activity within muscles.
25Interpret an EMG graph1231At which point is the muscle undergoing the greatest strength of contraction?
26Learning Target: Explain the effects of fatigue on muscle action Learning Target: Explain the effects of fatigue on muscle action. (skill)
27Truth or BolognaKatie ran a half marathon. When she finished she could barley walk. T/B Katie could barley walk because her muscle cells were low on ATP, which is also known as fatigue.
29Sue- Her score is excellent. Todd’s score is good. Learning Target: Investigate the effect of exercise on grip strength. (skill)The following are national grip strength norms for 16 to 19 year olds.Gender Excellent Good Average Fair PoorMale > <39Female > <19Who has a grip strength that is excellent?Todd- 52Sue- 37Sue- Her score is excellent.Todd’s score is good.