Exam (elaborations)
Straighterline bio 201l lab7 The Muscular System
- Course
- Institution
Straighterline bio 201l lab7 The Muscular System
[Show more]
Content preview
Lab 7 The Muscular Systemjcd jcd jcd jcd BIO201L
Straighterline bio 201l lab7 The Muscular jcd jcd jcd jcd jcd jcd
System
StudentjcdName:jcdColinjcdFiorentno
AccessjcdCodejcd(locatedjcdonjcdthejcdlidjcdofjcdyourjcdlabjcdkit):jcdAC-QLY23HC
Pre-Lab Questions
jcd
1. Howjcddojcdbandingjcdpatternsjcdchangejcdwhenjcdajcdmusclejcdcontracts?
Musclejcdcontractionjcdcausesjcdactinjcdandjcdmyosinjcdmyofilamentsjcdtojcddecreasejcdlengthjcdandjcdcomejcdt
ogether.jcdBothjcdthejcdHjcdandjcdIjcdzonesjcdbecomejcdnarrowjcdandjcdthejcdAjcdbandjcdhasjcdnojcdchange.
2. Whatjcdisjcdthejcddifferencejcdbetweenjcdajcdmusclejcdorgan,jcdajcdmusclejcdfiber,jcdmyofibriljcdandjcdajcdmyofila
ment?
Musclejcdorgansjcdarejcdtissuejcdcomposedjcdofjcdcellsjcdandjcdfibersjcdproducingjcdmovementjcdthroughou
tjcdthejcdbodyjcdthatjcdresultjcdinjcdcontractions.jcdMusclejcdfibersjcdarejcdcomposedjcdofjcdmyofibrilsjcdthatjcdcon
tractjcdwhenjcdstimulatedjcdandjcdtheyjcdhavejcdmultiplejcdnuclei.jcdMyofibrilsjcdarejcdthreadjcdlikejcdstructur
esjcdcomposedjcdofjcdactinjcdandjcdmyosin.jcdAndjcdmyofilamentsjcdarejcdthejcdstructuresjcdthatjcdmakejcdupjc
dmyofibrils.
3. Outlinejcdthejcdmolecularjcdmechanismjcdforjcdskeletaljcdmusclejcdcontraction.jcdAtjcdwhatjcdpointjcdisjcdAT
Pjcdusedjcdandjcdwhy?
ATPjcdbindsjcdtojcdmyosin,jcdwhichjcdthenjcdconvertsjcdATPjcdintojcdADPjcdandjcdpi.jcdCalciumjcdandjcdtroponinj
cdbindjcdtogetherjcdandjcdcreatejcdtropomyosin,jcdwhichjcdallowsjcdthejcdmyosinjcdheadsjcdtojcdformjcdcrossjcd
bridges.jcdThejcdADPjcdandjcdPijcdarejcdreleased,jcdcausingjcdactinjcdtojcdslidejcdtowardsjcdthejcdcenterjcdofjcdthejcds
arcomerejcdresultingjcdinjcdajcdpowerjcdstroke.jcdATPjcdisjcdusedjcdimmediatelyjcdtojcdcreatejcdanjcdincreasejcdi
njcdheartjcdratejcdandjcdbodyjcdtemperaturejcdtojcdallowjcdthejcdbodyjcdtojcdbejcdin.jcdhomeostasis.
4. Explainjcdwhyjcdrigorjcdmortisjcdoccurs.
Thisjcdoccursjcdbecausejcdthejcdmusclesjcdpartiallyjcdcontractjcdandjcdcannotjcdgojcdtojcdajcdrelaxedjcdstatejcdduejcdtoj
cdnojcdbloodjcdorjcdoxygenjcdflowingjcdthroughjcdthejcdbody.
Experiment 1: Tendons and Ligaments
jcd jcd jcd jcd
Post-LabjcdQuestions
1. Labeljcdthejcdarrowsjcdinjcdthejcdslidejcdimagesjcdbelowjcdbasedjcdonjcdyourjcdobservationsjcdfromjcdthejcdexper
iment.
A-jcdChondrocytes.
B-jcdcollagen.
C-jcdcollagenjcdfibers.
D-jcdskeletaljcdmusclejcdfiber.
E-jcdnuclei.
F-jcdcollagenjcdfibers.
,Lab 7 The Muscular System
jcd jcd jcd jcd BIO201L
, Lab 7 The Muscular System
jcd jcd jcd jcd BIO201L
2. Howjcddoesjcdthejcdextrajcdcellularjcdmatrixjcdofjcdconnectivejcdtissuesjcdcontributejcdtojcditsjcdfunction?
Thejcdextracellularjcdmatrixjcdbindsjcdtissuejcdtypesjcdthatjcdarejcddifferentjcdlikejcdbindingjcdthejcdepidermisjcdtojcdt
hejcddermisjcdlayerjcdthat’sjcdbeneathjcdit.
3. Whyjcdarejcdtendonsjcdandjcdligamentjcdtissuesjcddifficultjcdtojcdheal?
Bothjcdtendonsjcdandjcdligamentsjcdhavejcdnojcdbloodjcdsupplyjcdorjcdbloodjcdvesselsjcdthatjcdrunjcdthroughjcdthe
mjcdsojcdtheyjcddon’tjcdgetjcdnutrientsjcdthatjcdallowjcdorjcdhealing..
4. Whatjcddifferencejcddojcdyoujcdseejcdbetweenjcdthejcdtendonjcd–
jcdmusclejcdinsertionjcdimagejcdandjcdthejcdtendonjcdimage?
Thejcdtendonjcdmusclejcdinsertionjcdhasjcddensejcdirregularjcdconnectivejcdtissuejcdandjcdhasjcdchondrocytesjc
dandjcdcollagen.jcdThejcdtendonjcdisjcdsmoothjcdandjcdmovesjcdinjcdonejcddirectionjcdandjcdcontainsjcdmorejcdt
hanjcdonejcdnucleus..
5. Whatjcddifferencesjcddojcdyoujcdseejcdbetweenjcdthejcdtendonjcdandjcdligamentjcdsections?
Thejcdligamentjcdhasjcdskeletaljcdmusclejcdfibers,jcdandjcdthejcdtendonjcdseemsjcdtojcdbejcdclosejcdtogetherjcdwhilejc
dthejcdtendonjcdisjcdseparated..
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller CleverCopies. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
80467 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now