Docsity
Log inSign up
Docsity
Prepare for your exams
Prepare for your exams

Study with the several resources on Docsity

Earn points to download
Earn points to download

Earn points by helping other students or get them with a premium plan

Guidelines and tips
Guidelines and tips
Sell on Docsity
Sell on Docsity
Log inSign up

Prepare for your exams

Study with the several resources on Docsity

Find documents

Prepare for your exams with the study notes shared by other students like you on Docsity

Search Store documents

The best documents sold by students who completed their studies

Search through all study resources
Docsity AINEW

Summarize your documents, ask them questions, convert them into quizzes and concept maps

Explore questions

Clear up your doubts by reading the answers to questions asked by your fellow students

Earn points to download

Earn points by helping other students or get them with a premium plan

Share documents
download point icon20 Points

For each uploaded document

Answer questions
download point icon5 Points

For each given answer (max 1 per day)

All the ways to get free points
Get points immediately

Choose a premium plan with all the points you need

Study Opportunities

Choose your next study program

Get in touch with the best universities in the world. Search through thousands of universities and official partners

Community

Ask the community

Ask the community for help and clear up your study doubts

University Rankings

Discover the best universities in your country according to Docsity users

Free resources

Our save-the-student-ebooks!

Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors

From our blog

Exams and Study
Go to the blog

UCCS Human Physiology Chapter 12 Study Set Exam: Muscle Physiology, Exams of Physiology

McNeese State University (MSU)Physiology

This study set covers key concepts in muscle physiology, including the types of muscle, muscle contraction mechanisms, energy systems for muscle contraction, and the differences between skeletal and smooth muscle. It includes questions and answers that test understanding of these topics, making it a valuable resource for students studying human physiology.

Typology: Exams

2024/2025

Available from 02/12/2025

Smartsolutions
Smartsolutions 🇺🇸

2.3

(3)

11K documents

1 / 3

Toggle sidebar

This page cannot be seen from the preview

Don't miss anything!

bg1
UCCS Human Physiology
Chapter 12 Study Set Exam
What are the 3 types of muscle? - Answer Cardiac-striated
Skeletal-striated
Smooth-not striated
What is a muscle antagonism? - Answer Flexor extensor pairs (bicep/tricep)
What is the organization of a sarcomere? - Answer Z disks-set border for sarcomere
I Band- a region containing only thin filament (actin)
A Band- the area that has both thin and thick fibers
H Zone-the area consisting of only thick fibers
How does muscle cross-bridging work? - Answer Myosin reaches over and binds to an
actin strand
What are the three major steps leading up to muscle contraction? - Answer Release,
Binding, Powerstroke (maybe, unsure)
Explain excitation contraction coupling - Answer The elctrical stimulation of muscle
fibers due to an action potential causes the binding of Ca+2 and causes muscle
contraction
Explain the contraction-relaxation cycle - Answer Ca ions bind and cause muscle
contraction. Ions are removed via ATP and the muscle fiber relaxes
What part of sarcomere contraction requires ATP? - Answer Relaxation
What actions required for skeletal muscle contraction require ATP (3 actions)? - Answer
1. Crossbridge formation and detachment
2. Ca ion pumping
3. Relaxation and tropomyosin re-covering
How is calcium removed from the cytosol? - Answer ATP pumps Ca into the
sarcoplasmic reticulum
What are the 3 NRG systems for muscle contraction? - Answer 1. Phosphocreatine
pf3

Partial preview of the text

Download UCCS Human Physiology Chapter 12 Study Set Exam: Muscle Physiology and more Exams Physiology in PDF only on Docsity!

UCCS Human Physiology

Chapter 12 Study Set Exam

What are the 3 types of muscle? - Answer Cardiac-striated Skeletal-striated Smooth-not striated What is a muscle antagonism? - Answer Flexor extensor pairs (bicep/tricep) What is the organization of a sarcomere? - Answer Z disks-set border for sarcomere I Band- a region containing only thin filament (actin) A Band- the area that has both thin and thick fibers H Zone-the area consisting of only thick fibers How does muscle cross-bridging work? - Answer Myosin reaches over and binds to an actin strand What are the three major steps leading up to muscle contraction? - Answer Release, Binding, Powerstroke (maybe, unsure) Explain excitation contraction coupling - Answer The elctrical stimulation of muscle fibers due to an action potential causes the binding of Ca+2 and causes muscle contraction Explain the contraction-relaxation cycle - Answer Ca ions bind and cause muscle contraction. Ions are removed via ATP and the muscle fiber relaxes What part of sarcomere contraction requires ATP? - Answer Relaxation What actions required for skeletal muscle contraction require ATP (3 actions)? - Answer

  1. Crossbridge formation and detachment
  2. Ca ion pumping
  3. Relaxation and tropomyosin re-covering How is calcium removed from the cytosol? - Answer ATP pumps Ca into the sarcoplasmic reticulum What are the 3 NRG systems for muscle contraction? - Answer 1. Phosphocreatine
  1. Anaerobic glycolysis
  2. Aerobic Respiration How does phosphocreatine renew ATP? - Answer PO4 group binds to ADP What is the difference between central and peripheral fatigue and what are causes for both? - Answer Central: in CNS, caused by heat and protective reflex Peripheral: in PNS, caused by low glycogen, low Ca ion release, ion imbalance What characteristics differentiate type 1 and 2 muscle fibers and what are the primary purposes of each? - Answer 1: Slow twitch, high in mitochondria, fatigue resistant, red color, endurance and posture 2: Fast-twitch, force and speed, low O2 dependence, fatigue quickly, sprinting, power movements How does muscle fiber length affect tension? - Answer Shorten=less tension Lengthen=more tension What is summation? - Answer An increase in force due to incomplete relaxation before contraction What is tetanus? - Answer When a muscle stays in a constant state of contraction What is a motor unti? - Answer a motor neuron and the muscle fibers it innervates How do we get our muscles to generate a greater force? - Answer Recruitment What is the nerve to muscle ratio for generating force? Fine motor control? - Answer Force: high ratio of muscle to nerve Fine motor: low ration of muscle to nerve What are the elastic elements of skeletal muscle contraction? - Answer The portion of a muscle fiber that lacks sarcomeres and stretches during contraction to keep the muscle at the same length How are we able to generate force if limbs are not moving? - Answer Using both extensors (tricep) and the elasticity of muscle fibers What are the three types of levers and their advantages/disadvantages? - Answer Class 1: Fulcrum between load and force, good for fine motor mvmt, poor force Class 2: Fulcrum at on end, force at the other, load in middle. Good force production, poor precision Class 3: fulcrum and load at opposing ends, force in middle. Most common in body (elbow), rapid movement and good RoM, sacrifices force