Myofibrils - Study guides, Class notes & Summaries

Why are the ends of the A band the darkest region of the sarcomere? - ️️the thick and thin filaments overlap Skeletal muscle moves a bone at a joint, such as flexing the forearm at the elbow. How is the opposite action produced (for example, extension at the elbow)? - ️️an Agonistic muscle produces the opposite movement Satellite cells lie just outside the muscle ____________________ - ️️fiber membrane What do satellite cells do when they become active? - ️️differentiate i...

Oakland University BIO2100 Chris Kauhn Exam 2; Questions & Answers 100% Verified Properties of Muscle Tissue Answer-Contractility, Extensibility, Elasticity, Irritability, Tonus Smooth Muscle Answer-Involuntary, walls of internal organs and blood vessels, possess 1 nucleus, not striated Cardiac Muscle Answer-Involuntary, located in heart, appears striated due to intercalated discs and has 1 nucleus Skeletal Muscle Answer-Can grow to 4 cm in length, multinucleated, voluntary, Muscle Fi...

GMS 6474 Questions and Answers Rated A+ Lecture 2 Muscles can either be ____ or ____? 1. Voluntary 2. Involuntary What is one question to ask when comparing voluntary to involuntary muscles? How is the underlying tissue metabolized? Cardiac functional syncytial vs smooth muscle functional syncytial? Cardiac - pacemaker cells cause contractions Smooth - vasodilation/vasoconstriction True/False: Smooth muscle has striations? FALSE! what two factors determine the force pro...

NASM 7th Edition Questions and Answers 2023 What percentage of adults are do not meet recommended activity guidelines? 80% BMI Normal 18.5-24.9 Overweight BMI 25-29.9 Obese BMI over 30 Bad Blood Pressure Hypertension= 140/90 normal blood pressure 120/80 140 systolic It is specifically the maximum arterial pressure during contraction of the left ventricle of the heart. 90 Diastolic- relating to the phase of the heartbeat when the heart mus...

Which of the following is a recognized function of skeletal muscle? 1) A) guard body entrances and exits B) maintain posture C) maintain body temperature D) produce movement E) all of the above -Correct Answer E Nerves and blood vessels that service the muscle fibers are located in the connective tissues of the A) myofibrils. B) sarcolemma. C) endomysium. D) sarcomere. E) perimysium. -Correct Answer E Which of the following best describes the term sarcoplasmic reticul...

exam 1 = 29 questions  3 essay questions  7 image questions  Rest is M.C. 1. Gross structure of muscle and surrounding connective tissue: a. The muscle is arranged in a hierarchical structure: i. Whole muscle: 1. Made up of multiple muscle fascicles 2. Surrounded by epimysium: a. External sheath of connective tissue surrounding the whole muscle. b. Separates whole muscles from one another ii. Muscle fascicle: 1. Bundles of individual muscle fibers 2. Surrounded by perimysi...

NSCA CSCS Chapter 1 Exam Questions with Answers neuromuscular junction - Answer-junction between motor neuron and muscle fibers it innervates motor unit - Answer-motor neuron and muscle fibers it innervates myofibrils - Answer-contain the apparatus that contracts muscle cells myofilaments - Answer-actin and myosin myosin - Answer-thick filament actin - Answer-thin filament longitudinally - Answer-mysoin and actin arranged this way in the sarcomere sarcomere - Answer-smalle...

Tissues- what types? correct answers 1. Epithelial 2. connective 3. nervous 4. muscle skeletal system function correct answers 1. protection 2. movement 3. mineral storage 4. production of blood osteoblasts correct answers responsible for bone formation and breakign it down to be re-formed. bone contains what? and heals better than what? correct answers contains blood vessels and heals better than cartilage, which has no bloody supply and needs nutrients to diffuse in axial ske...

What is a regulatory protein complex made of three polypeptides. Where do the three polypeptides bind? - ️️-troponin -one binds to tropomyosin, one binds to actin, one binds to Ca2+ What bands (that are also called dark bands) are made up of stacked thick and thin filaments that are aligned parallel to each other. Its borders are defined by the length of the thick filaments. - ️️A band Looking at a cross section of a ___________ you can see a highly organized cytoskeletal patter o...

Epimysium - ANSWER Connective tissue layer surrounding muscle organ Fasicles - ANSWER Muscular subunits that contain muscle cells. Coated by parimysium Muscle Cell - ANSWER Coated by endomysium Sarcolemma - ANSWER muscle cell cytoplasm Unique characteristics of muscle cells - ANSWER High concentration of mitochondria, multiple nuclei, sarcoplasmic reticulum, t-tubules, and myofibrils Sarcoplasmic Reticulum - ANSWER ER that covers the myofibrils