Please read about the new changes close Cardiac action potential From Wikipedia‚ the free encyclopedia Jump to: navigation‚ search This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. (May 2013) As in other cells‚ the cardiac action potential is a short-lasting event in which the difference of potential between the interior and the exterior
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Torsion- twisting of the embryo along the left-right axis (similar to the twist of the body when a golfer swings at the ball). MOST prominent in the 48-hour chick embryo Flexion- bending of the embryo along the anterior-posterior axis. In amniotes the tip of the head bends towards the heart. Types of flexion: cranial flexion‚ cervical flexion‚ pontine flexure‚ dorsal flexure‚ caudal flexure. ^Cervical flexure- ventral bend in embryo at transition between myelencephalon and spinal cord ^Dosal Flexure-
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| The active ingredients in gastric juice are Answer | | Selected Answer: | pepsin and hydrochloric acid | | Question 2 1 out of 1 points | | | The adjective hepatic refers to the Answer | | | | | Selected Answer: | liver | | | | | Question 3 1 out of 1 points | | | Select the term from the second column that best applies to each item in the first column and write the appropriate letter in the blank. Answer | | | | | Question | Selected
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2. Compare the development of lymphocytes with other formed elements. B lymphocytes develop in red bone marrow‚ T lymphocytes develop in red bone marrow and mature in the thymus; the other formed elements develop in red bone marrow 3. What is erythropoiesis? Which factors speed up and slow down erythropoiesis? Erythropoiesis is the process by which red blood cells (erythrocytes) are produced. If you lose a lot of blood‚ erythropoiesis will speed up; anemia can cause erythropoiesis to slow down
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Cell Wall- The cell wall is a rigid structure outside the cell membrane that supports and protects the cell. The cell wall is made of tough cellulose fibers and other materials made by the cell. Analogy- In a restaurant the building itself supports the restaurant. It is often made of wood or concrete. Cell Membrane- The cell membrane is a structure that forms the outer boundary of the cell and allows only certain materials to move into and out of the cell. Food‚ oxygen and water move into
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Chapter 8 Test Review Multiple Choice 1. Which is not a part of the axial skeleton? A. rib B. vertebral column C. mandible D. clavicle 2. Which is not a part of the appendicular skeleton? A. coxal bones B. parietal bones C. radius D. clavicle 3. The axial skeleton consists of: A. 60 bones. B. 68 bones. C. 74 bones. D. 80 bones. 4. The appendicular skeleton consists of: A. 102 bones. B. 118 bones. C. 126 bones. D. 137 bones. 5. The term sinus‚ as it relates to bone
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“ Ageing is a continuous‚ complex‚ and dynamic process that begins with birth and ends with death. And unless we die in our early years‚ each of us will grow old and experience the effects of the ageing process”. (Pirkl‚ 2009). The ageing process and why changes have taken place in the last fifty years. This report discusses the ageing process and why changes have taken place in the last fifty years. The ageing process is a change in an organism overtime and can be referred to as a multidimensional
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Origin Insertion Action coracobrachialis (deepest underarm) coracoid process of scapula medial midshaft of humerus humerus: flexion‚ medial rotation‚ abduction biceps brachii short head coracoid process of scapula long head supraglenoid tubercle of scapula radial tuberosity‚ bicipital aponerousis humerus: flexion forearm: supination‚ flexion brachialis (in b/w) anterior distal half of humerus tuberosity of ulna forearm: flexion
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Exercise 1 Cell Transport Mechanisms and Permeability Name ____________________________________________________________ Lab Time/Date ______________________________ Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. * The size of the pores of the membrane * The size of the molecule diffusing through the membrane 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results
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Anatomy Review: The Heart Graphics are used with permission of: Pearson Education Inc.‚ publishing as Benjamin Cummings (http://www.aw-bc.com) Page 1. Introduction • The heart is the transport system pump; the delivery routes are the blood vessels. Using blood as the transport medium‚ the heart propels oxygen‚ nutrients‚ wastes‚ and other substances to and past the body cells. Page 2. Goals • To review the anatomy of the heart. • To review the pulmonary and systemic circuits. • To review
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