Geschreven door studenten die geslaagd zijn Direct beschikbaar na je betaling Online lezen of als PDF Verkeerd document? Gratis ruilen 4,6 TrustPilot
logo-home
Tentamen (uitwerkingen)

MCPHS Anatomy and Physiology Exam 3 with verified answers

Beoordeling
-
Verkocht
1
Pagina's
16
Cijfer
A+
Geüpload op
24-04-2025
Geschreven in
2024/2025

MCPHS Anatomy and Physiology Exam 3 with verified answers

Instelling
Vak

Voorbeeld van de inhoud

MCPHS Anatomy and Physiology
Exam 3 with verified answers

Functions of the muscular system: - correct answer ✔Movement of the body
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Maintenance of posture |||||| ||||||




Respiration
Production of body heat |||||| |||||| ||||||




Communication
Constriction of organs and vessels |||||| |||||| |||||| ||||||




Contraction of heart |||||| ||||||




Three Es and a C: Properties of muscle tissue - correct answer ✔Contractility - ability of a
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




muscle to shorten with force
|||||| |||||| |||||| ||||||




Excitability - capacity of a muscle to respond to a stimulus |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Extensibility - muscle can stretch beyond normal resting length and be able to contract
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Elasticity - ability of muscle to recoil to original resting length after stretched
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




3 types of muscle - correct answer ✔Skeletal - voluntary
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Smooth - controlled involuntarily by endocrine and autonomic nervous system
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Cardiac - controlled involuntarily by endocrine and autonomic nervous system
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Epimysium - correct answer ✔CT that surrounds whole muscle |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Perimysium - correct answer ✔loose CT surrounding a group of muscle fibers; passage for
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




blood vessels and nerves
|||||| |||||| ||||||

,Endomysium - correct answer ✔loose CT separating individual muscle fibers within each |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




fasicle


Fiber anatomy - correct answer ✔Large, multinucleated
|||||| |||||| |||||| |||||| |||||| ||||||




1-4 mm avg length
|||||| |||||| ||||||




Have striated appearance
|||||| ||||||




Number of fibers is relatively constant after birth |||||| |||||| |||||| |||||| |||||| |||||| ||||||




- Get larger, but not more
|||||| |||||| |||||| |||||| ||||||




cardiac muscle - correct answer ✔Only in heart |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Striated
Each cell has 1 nucleus
|||||| |||||| |||||| ||||||




Intercalated disks and gap junctions |||||| |||||| |||||| ||||||




Autorhythmic
Action potentials of longer curation and refractory period
|||||| |||||| |||||| |||||| |||||| |||||| ||||||




Ca2+ regulated contraction
|||||| ||||||




smooth. muscle - correct answer ✔Not striated, small fibers |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Spindle-shaped, single, central nucleus |||||| |||||| ||||||




More actin than myosin, cross-bridging occurs
|||||| |||||| |||||| |||||| ||||||




Ca2+ required to initiate contraction
|||||| |||||| |||||| ||||||




Wavy


Sarcolemma - correct answer ✔plasma membrane, surround sarcoplasm (cytoplasm) |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Transverse tubules (T tubules) - correct answer ✔inward folds of sarcolemma; project into
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




interior of muscles |||||| ||||||

, Sarcoplasmic reticulum - correct answer ✔specialized smooth ER; store calcium |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




terminal cisternae - correct answer ✔Enlarged portion od SR adjacent to T tubules
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Myofibrils - correct answer ✔protein filament bundles; contain myofilaments that cause
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




contraction


Myofilament - correct answer ✔actin and myosin |||||| |||||| |||||| |||||| |||||| ||||||




Actin - correct answer ✔thin
|||||| |||||| |||||| ||||||




2 strands of F actin form double helix extending length of myofilament; composed of G
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




actin monomer that has active site, bind myosin during contraction
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Tropomyosin - elongated protein along the groove of F actin double helix - BLOCK binding |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




site G actin
|||||| ||||||




Troponin - 3 subunits: bind actin, binds tropomyosin, bind calcium ions|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Troponin/tropomyosin complex regulates interaction between active sites on G actin and |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




myosin


myosin - correct answer ✔thick |||||| |||||| |||||| |||||| ||||||




Shaped like golf clubs, consist of heave chains wound together to form rod portion lyin
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




parallel to myosin microfilament and 2 myosin heads that extend laterally
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Heads: can bind active sites on actin to form cross-bridge, attach to rod portion bt hinged
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




region that can bed during contraction, ATPase enzymes (break down ATP to release
|||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




energy)


sarcomeres - correct answer ✔basic functional unit of fiber - smallest part that can contract |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| |||||| ||||||




Sarcomeres give striated appearance |||||| |||||| ||||||

Geschreven voor

Instelling
Vak

Documentinformatie

Geüpload op
24 april 2025
Aantal pagina's
16
Geschreven in
2024/2025
Type
Tentamen (uitwerkingen)
Bevat
Vragen en antwoorden

Onderwerpen

$15.99
Krijg toegang tot het volledige document:

Verkeerd document? Gratis ruilen Binnen 14 dagen na aankoop en voor het downloaden kun je een ander document kiezen. Je kunt het bedrag gewoon opnieuw besteden.
Geschreven door studenten die geslaagd zijn
Direct beschikbaar na je betaling
Online lezen of als PDF


Ook beschikbaar in voordeelbundel

Maak kennis met de verkoper

Seller avatar
De reputatie van een verkoper is gebaseerd op het aantal documenten dat iemand tegen betaling verkocht heeft en de beoordelingen die voor die items ontvangen zijn. Er zijn drie niveau’s te onderscheiden: brons, zilver en goud. Hoe beter de reputatie, hoe meer de kwaliteit van zijn of haar werk te vertrouwen is.
Ruiz Liberty University
Volgen Je moet ingelogd zijn om studenten of vakken te kunnen volgen
Verkocht
98
Lid sinds
1 jaar
Aantal volgers
1
Documenten
13905
Laatst verkocht
1 dag geleden
Top-Quality Study Materials for Success – Ace Your Exams with Expert Resources!

Access high-quality study materials to help you excel in your exams. Get notes, summaries, and guides tailored to your courses!

3.2

15 beoordelingen

5
4
4
4
3
2
2
1
1
4

Recent door jou bekeken

Waarom studenten kiezen voor Stuvia

Gemaakt door medestudenten, geverifieerd door reviews

Kwaliteit die je kunt vertrouwen: geschreven door studenten die slaagden en beoordeeld door anderen die dit document gebruikten.

Niet tevreden? Kies een ander document

Geen zorgen! Je kunt voor hetzelfde geld direct een ander document kiezen dat beter past bij wat je zoekt.

Betaal zoals je wilt, start meteen met leren

Geen abonnement, geen verplichtingen. Betaal zoals je gewend bent via iDeal of creditcard en download je PDF-document meteen.

Student with book image

“Gekocht, gedownload en geslaagd. Zo makkelijk kan het dus zijn.”

Alisha Student

Bezig met je bronvermelding?

Maak nauwkeurige citaten in APA, MLA en Harvard met onze gratis bronnengenerator.

Bezig met je bronvermelding?

Veelgestelde vragen