Functional syncytium Study guides, Class notes & Summaries

MCBM 3: Excitable Cells (Talbot)-JCN Exam Questions and Answers 100% CorrectMCBM 3: Excitable Cells (Talbot)-JCN Exam Questions and Answers 100% CorrectMCBM 3: Excitable Cells (Talbot)-JCN Exam Questions and Answers 100% CorrectMCBM 3: Excitable Cells (Talbot)-JCN Exam Questions and Answers 100% Correct Know which cell types are considered excitable and why. - ANSWER - Excitable cells are *capable of developing action potentials* because they *express voltage-gated cation channels* in specific ...

EXSS 175 Exam 3 Questions with Correct Answers The cardiovascular system consists of - Answer-the heart, vessels, blood, and the circulation Peripheral circulation - Answer-blood supply for the extremities Cerebral circulation - Answer-blood supply for the brain Coronary circulation - Answer-blood supply to the heart muscle Main function of the heart - Answer-to move the blood through the vessels by contraction of muscle The heart pumps over million gallons of blood per year - ...

Pacemaker cells Cells that can initiate depolarization on their own Automaticity Ability of pacemaker cells to initiate depolarization SA node Location of pacemaker cells in a normal heart; 70-100 action potentials per minute at rest Conduction system Pathway of electrical conduction in the heart AV node Slows impulse conduction to allow for completion of atrial contraction; 40-60 action potentials per minute if SA node fails Purkinje fibers Rapid conduction pathway in the ventricle...

____ are the smallest blood vessels. - Capillaries ____ is the amount of blood pumped out of each ventricle in one minute. - stroke volume ____ is the force per unit area exerted on he wall of a blood vessel by its contained blood. - Blood pressure ____ is the internal resistance to flow, and is related to the thickness of blood. - Blood viscosity ____ refers to the relaxation phase of heart activity. - Diastolic ____ transport blood away from the heart. - Arteries Because of ____, the my...

Biology 235 Physiology - Exam #2 Questions With Verified Answers What are the three types of muscle tissue? - answer1) Skeletal muscle 2) Cardiac muscle 3) Smooth muscle What are the characteristics of skeletal muscle? - answer- Long, cylindrical cells - Multinucleate - Striated with numerous fine bands - Voluntary - Neurogenic, it requires a nerve to stimulate it What are the characteristics of smooth muscle? - answer- Spindle shapes - Flat and unstriated - Single nucleus - Involun...

What are the functions of the circulatory system? - ️️transport essential materials , collect waste materials The circulatory system is divided into? - ️️Pulmonary circuit - blood vessels going to and from the lungs Systemic circuit - blood vessels going to and from the rest of the tissues of the body. Much higher pressure than the pulmonary circuit Describe the anatomy of the heart - ️️Contain the Atria, Ventricles, Septum dividing left and right sides, thick walled left ve...

Electrical Activity of the HeartWhat is an action potential? - correct answer Rapid change in the transmembrane potential followed by a return to the resting membrane potential When do changes in transmembrane potential occur? - correct answer During changes in the permeability of the cell membrane to intracellular and extracellular ions Is the duration of APs in cardiac cells shorter or longer than in nerves cells or skeletal/smooth muscle? - correct answer Much longer What is the effe...

Chapter 11 - Which of the following structures is the primary pacemaker of the heart? a. Ventricular tissue c. Sinoatrial node b. Atrioventricular node d. Purkinje fibers - ANS: C With an intrinsic rate of 60 to 100 beats/min, the sinoatrial node is the primary pacemaker in a healthy heart. The atrioventricular node beats 40 to 60 beats/min. Ventricular tissue must have an electrical impulse to contract. Purkinje fibers beat 15 to 40 beats/min 3. Why do many patients with very hi...

1. What term was coined by Thomas Willis as a consequence of the case of Anne Green? a. psychopathology b. cognition c. neurology d. psychosis ANS: C DIF: Easy REF: 1.1 A Historical Perspective OBJ: 1.1 MSC: Remembering 2. Aside from saving Anne Green’s life, Thomas Willis and Christopher Wren also a. created very accurate drawings of the brain. b. came up with the names of a number of brain structures. c. took the first steps that led to cognitive neuroscience. d. All of the ans...

Chapter 9 Hole's Human Anatomy & Physiology 9th edition David Shier, Ricki Lewis, Jackie Butler,2024 Test Bank for Chapter 9 Muscular System complete (multiple choice, true or false and case studies) ________________________________________ Muscular System Multiple Choice Quiz Please answer all questions 1 Which of the following types of muscle are found in the stomach or blood vessels? A) cardiac B) skeletal C) visceral D) striated 2 A lar...