Intercalated discs Study guides, Class notes & Summaries

APHY 102 Exam 3 Chapter (19-21)Review Questions and Answers 2024 The superior portion of the heart where major blood vessels enter and exit is the: Base Apex Inferior border Left border Base The inferior point of the heart is called the: Base Apex Inferior border Left border Apex Most of the mass of the heart lies to the ______ of the midline: Area above Area below Left Right Left Most of the middle layer in the heart wall is composed of: Cardiac muscle c...

Chamberlain bios 252 exam 1 Questions With Solutions 100% Correct skeletal muscle - long, thin, cylindrical in shape - multinucleated - attached to bone & skin - voluntary - striated cardiac muscle - short, fat, branched - uninucleated - in heart - attached to intercalated discs - involuntary - striated

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) What is...

The ____ originates on the sternum and clavicle inserts on the mastoid process ~ sternocleidomastoid The muscle that inserts via the Achilles tendon is ____. ~ gastrocnemius the ____, an elbow flexor, is the antagonist of the ____ and elbow extensor. ~ biceps brachii, triceps brachii another word for muscle tone is ____. ~ tonus when muscle fibers increase in diameter and get stronger is ____ ~ hypertrophy when muscles waste away from lack of use is ____ ~ atrophy cardiac...

what are the two layers of the pericardial sac correct answer: outer fibrous pericardium anchors the heart to diaphragm visceral pericardium (epicardium) has a serous membrane what is unique about cardiac muscle (myocardial fibers) correct answer: - no nerves are present intercalated discs at the junctions between fibers (they contain desmosomes, connections to prevent muscle cells from separating during contraction, and gap junctions, which permit ions to pass from cell to cell which fac...

APHY 102 Exam 3 Chapter (19-21)Review Questions and Answers 2024 The superior portion of the heart where major blood vessels enter and exit is the: Base Apex Inferior border Left border Base The inferior point of the heart is called the: Base Apex Inferior border Left border Apex Most of the mass of the heart lies to the ______ of the midline: Area above Area below Left Right Left Most of the middle layer in the heart wall is composed of: Cardiac muscle c...

Sarcomere The basic unit of muscle contraction. A unit of proteins between Z-discs Thin Filaments (actin, tropomyosin, troponin) Thick Filaments (myosin) Stabilizer proteins (titin, nebula) Sequential events of contraction Ca+ binds to troponin> moves tropomyosin exposing actin> 1. Cross bridging myosin to actin 2. Power stroke ADP & P released 3. Detachment binding of ATP 4. Cocking of myosin head ATP split into ADP & P Cardiac and Skeletal Muscle Similarities Microscopically similar ...

NHA CET Exam Study Guide Questions and Answers 100% CorrectNHA CET Exam Study Guide Questions and Answers 100% CorrectNHA CET Exam Study Guide Questions and Answers 100% Correct Heart - ANSWER-Hollow muscular organ located in the thoracic cavity between the lungs just behind the sternum Name and describe the innermost layer of the heart - ANSWER-Endocardium Inner lining that folds back on itself to form four valves Provides conduction system Name and describe the outermost layer of the ...

Which of these is not considered connective tissue? a) blood b) muscle c) cartilage d) apipose - Answer: B) muscle Which of these following is a skin sensory receptor for light touch? a) Ruffini body b) free blood cells c) Meissner's corpuscle d) hair follicles - Answer: C) Meissner's corpuscle Which of the following is a single-cells layer of epithelium that forms the lining of serous membranes? a) simple cuboidal b) simple columnar c) pseudo-stratified columnar d) sim...

Dense Regular TissueTendons and most ligaments; white fibrous and collagen fibers Skeletal TissueAttached to the skeleton; multinucleated, striated, and voluntary Cardiac TissueOnly in the heart; pumps blood through the body; contains intercalated discs Smooth TissueWalls of hollow organs (digestive, urinary tract, uterus, and blood vessels); no striation; spindle-shaped cells FrontalisInsertion: skin of eyebrows and bridge of nose; Origin: epicranial aponeurosis; Action: raises eyebro...