Anatomy muscle study guide

Hand the lists out to lab groups of 2 — 4 students. Each group must come up with a dance that uses the muscles on their card. They must then perform the dance and shout out the muscle being used while they use it. For added benefit, video the dances if students will allow and post on Blackboard — at least the ones that are correct!

Anatomy muscle study guide

Functions of the Heart The functions of the heart are as follows: Variations in the rate and force of heart contraction match blood flow to the changing metabolic needs of the tissues during rest, exercise, and changes in Anatomy muscle study guide position.

Anatomy muscle study guide

Contractions of the heart produce blood pressure, which is needed for blood flow through the blood vessels. Securing one-way blood flow.

The valves of the heart secure a one-way blood flow through the heart and blood vessels. The heart separates the pulmonary and systemic circulations, which ensures the flow of oxygenated blood to tissues. Anatomy of the Heart The cardiovascular system can be compared to a muscular pump equipped with one-way valves and a system of large and small plumbing tubes within which the blood travels.

Heart Structure and Functions The modest size and weight of the heart give few hints of its incredible strength. Snugly enclosed within the inferior mediastinum, the medial cavity of the thorax, the heart is flanked on each side by the lungs.

Its broad posterosuperior aspect, or base, from which the great vessels of the body emerge, points toward the right shoulder and lies beneath the second rib. The heart is enclosed in a double-walled sac called the pericardium and is the outermost layer of the heart.

The loosely fitting superficial part of this sac is referred to as the fibrous pericardium, which helps protect the heart and anchors it to surrounding structures such as the diaphragm and sternum.

Deep to the fibrous pericardium is the slippery, two-layer serous pericardium, where its parietal layer lines the interior of the fibrous pericardium. Layers of the Heart The heart muscle has three layers and they are as follows: The epicardium or the visceral and outermost layer is actually a part of the heart wall.

The myocardium consists of thick bundles of cardiac muscle twisted and whirled into ringlike arrangements and it is the layer that actually contracts. The endocardium is the innermost layer of the heart and is a thin, glistening sheet of endothelium hat lines the heart chambers.

Chambers of the Heart The heart has four hollow chambers, or cavities: The two superior atria are primarily the receiving chambers, they play a lighter role in the pumping activity of the heart.

Anatomy muscle study guide

The two inferior, thick-walled ventricles are the discharging chambers, or actual pumps of the heart wherein when they contract, blood is propelled out of the heart and into the circulation. The septum that divides the heart longitudinally is referred to as either the interventricular septum or the interatrial septum, depending on which chamber it separates.

Associated Great Vessels The great blood vessels provide a pathway for the entire cardiac circulation to proceed. Superior and inferior vena cava. The heart receives relatively oxygen-poor blood from the veins of the body through the large superior and inferior vena cava and pumps it through the pulmonary trunk.

The pulmonary trunk splits into the right and left pulmonary arteries, which carry blood to the lungs, where oxygen is picked up and carbon dioxide is unloaded.

Oxygen-rich blood drains from the lungs and is returned to the left side of the heart through the four pulmonary veins.

Blood returned to the left side of the heart is pumped out of the heart into the aorta from which the systemic arteries branch to supply essentially all body tissues.

Heart Valves The heart is equipped with four valves, which allow blood to flow in only one direction through the heart chambers. Atrioventricular or AV valves are located between the atrial and ventricular chambers on each side, and they prevent backflow into the atria when the ventricles contract.

The left AV valve- the bicuspid or mitral valve, consists of two flaps, or cusps, of endocardium. The right AV valve, the tricuspid valve, has three flaps. The second set of valves, the semilunar valves, guards the bases of the two large arteries leaving the ventricular chambers, thus they are known as the pulmonary and aortic semilunar valves.

Cardiac Circulation Vessels Although the heart chambers are bathed with blood almost continuously, the blood contained in the heart does not nourish the myocardium.

The coronary arteries branch from the base of the aorta and encircle the heart in the coronary sulcus atrioventricular groove at the junction of the atria and ventricles, and these arteries are compressed when the ventricles are contracting and fill when the heart is relaxed.

The myocardium is drained by several cardiac veins, which empty into an enlarged vessel on the posterior of the heart called the coronary sinus. Blood Vessels Blood circulates inside the blood vessels, which form a closed transport system, the so-called vascular system.

As the heart beats, blood is propelled into large arteries leaving the heart. It then moves into successively smaller and smaller arteries and then into arterioles, which feed the capillary beds in the tissues.Pectoralis Major Muscle – Attachment, Action & Innervation Pectoralis major is a thick, fan-shaped muscle contributing to the thoracobrachial motion.

It consists of a clavicular part and a sternal part, both converging to a flat tendon that inserts on the humerus. Mar 13,  · Hello! I am studying for the anatomy of muscles. I have a study guide over a bunch of information. I want to to the very best that I can on this test and I want to make sure I fill the blanks in correctly so that I am not studying the wrong monstermanfilm.com: Resolved.

The muscular system consists of all types of muscle in the body, though the voluntary skeletal muscles are the great majority.

The other two types of muscles are the cardiac and smooth muscles. They form important components of organs in other systems, like the cardiovascular, alimentary, genitourinary, integumentary, and visual systems. A couple of weeks ago, I successfully passed my CPT exam through NASM and promised you a Study Guide.

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