Intercalated discs Study guides, Class notes & Summaries

characteristics of cardiac muscle cells - ANSWER -short, branched -striated -one nucleus intercalated discs - ANSWER specialized structures that join individual cardiac muscle cells interconnected to form branching fibers with adjacent cells -gap junctions -desmosomes gap junctions - ANSWER tunnels that connect cells *there are no gap junctions between atrial and ventricular cells desmosomes - ANSWER adhere cells together but not completely tight chambers of the heart (4) - A...

skeletal muscle - ANSWER - long, thin, cylindrical in shape - multinucleated - attached to bone & skin - voluntary - striated cardiac muscle - ANSWER - short, fat, branched - uninucleated - in heart - attached to intercalated discs - involuntary - striated smooth muscle - ANSWER - in hollow organs - ininucleated - involuntary - lack striations excitability - ANSWER responsiveness to chemical signals, stretch, and electrical changes across the plasma membrane conductivit...

the myasthenia graves, ACh fails to bind to the muscle sarcolemma, this leads to ~ liquid gated channels not being able to open how many ATP are generated through cellular respiration ~ 36 What generates heat when a muscle contract ~ the production of new ATP needed for muscle contraction Myasthenia gravis is often treated with what ~ Cholinesterase inhibitors what accompanies muscle atrophy ~ loss of muscle mass and loss of structural proteins What lever class has the fulcrum situated...

What are the three types of muscle tissue? - ANSWER Skeletal, Cardiac, and Smooth What are characteristics of skeletal muscle? - ANSWER Striated, voluntary, multinucleated, somatic nervous system control What are characteristics of smooth muscle? - ANSWER Non-striated, involuntary, uninucleated, autonomic nervous control What are characteristics of cardiac muscle? - ANSWER Striated, branching, uninucleated, involuntary, autonomic nervous control, intercalated discs (gap junctions) Wh...

A&P Chapter 9 - UTA 2457 Dr. Henry Exam Study Guide Questions with Correct Answers Defined muscles are caused by constant _________-_________, making them look toned. - Correct Answer cross-bridging __________ (chemical) allows muscles to relax. - Correct Answer potassium ____________ muscle moves bones. It is ____________, multinucleated, and voluntary. An example of a muscle that is both voluntary and involuntary is the _____________. - Correct Answer skeletal, striated, diaphragm __...

QUIZ 3 QUESTIONS & ANSWERS Question 1 of 32 3.0/ 3.0 Points Which of the following is/are true of the molecule named hemoglobin? • A. It numbers approximately 1 to 2 million in each erythrocyte. • B. It can bind to only one molecule of oxygen. • C. It is a very simple protein structure. • D. It contains four folded chains of a protein named globin. • E. It functions as the nucleus in all mature erythrocytes. Feedback:Good work; y...

A&P CHAPTER 4 TISSUES QUESTION AND ANSWERS (VERIFIED ANSWERS) "fibers" of blood - ANSWERproteins related to blood clotting adipose tissue - ANSWERlarge amount of adipocytes and sparse fibers FUNCTION: energy storage, support, insulation, protection FOUND: skin, abdomen, bone marrow, breasts apical surface - ANSWERupper epithelial tissue areolar tissue - ANSWERconnective loose gel like matrix with three types of fibers loosely arranged FUNCTION: wraps, cushions and protects blo...

abdominal - anterior body trunk inferior to ribs acromial - point of shoulder adipose connective tissue (loose) - matrix as in areolar, but very sparse, closely packed adipocytes (fat cells), have nucleus pushed to the side * fat - marshmallows in hot chocolate aereolar connective tissue - del like, 3 fiber types, fibroblasts, macrophages, mast cells, some white blood cells - cushions organs - surrounding capillaries anaphase - chromosomes separate and move to opposite ends of the cell ...

What are the three types of muscle tissue? - Skeletal, Cardiac, and Smooth What are characteristics of skeletal muscle? - Striated, voluntary, multinucleated, somatic nervous system control What are characteristics of smooth muscle? - Non-striated, involuntary, uninucleated, autonomic nervous control What are characteristics of cardiac muscle? - Striated, branching, uninucleated, involuntary, autonomic nervous control, intercalated discs (gap junctions) What is the thick filament? - Myosi...

SCNM Q1 ANAT 5014 Final The the layer of the heart wall is made up of - correct answer parietal pericardium - dense fibrous layer, areolar tissue, mesothelium What are the layers that may up the heart wall? - correct answer Epicardium Myocardium Endocardium The epicardium is also known as the __________. - correct answer visceral pericardium, It is the outer layer that covers the heart The myocardium is - correct answer -The middle layer -the thick muscular wall of the heart ...