Cardiovascular system  |
| Cardiac physiology |
| Cardiovascular system Cardiovascular system |
| Cardiovascular system |
| Cardiovascular system the cardiovascular/circulatory system transports food, hormones, metabolic wastes, and gases (oxygen, carbon dioxide) to and from cells. Components of the circulatory system include: blood: consisting of liquid plasma and cells, blood vessels (vascular system): the "channels" (arteries, veins, capillaries) which carry blood to/from all tissues. (arteries carry blood away from the heart. Veins return blood to the heart. Capillaries are thin-walled blood vessels in which gas/ nutrient/ waste exchange occurs.), heart: a muscular pump to move the blood |
| Cardiovascular system anatomy and physiology of the cardiovascular system |
| Cardiothoracic imaging comprehensive overview of cardiothoracic imaging and major diseases, including over 700 diagnostic images, 100 original medical illustrations, and many animations and audiovisuals. Designed primarily for second-year medical students at Yale, the site may also be useful to science teachers, pre-med undergraduates, and anyone interested in the details of heart and lung imaging |
| Circulatory system The Aorta and the Arterial System, The Venous System, The Heart, capillaries |
| Circulatory System |
| Circulatory System The Heart Sounds, Coronary Circulation, The Heartbeat, The Pulmonary Circulation, The Systemic Circulation, The Lymphatic System, The Blood, Red Blood Cells, White Blood Cells, Platelets, Plasma, Diseases of the Blood, Anemia, Leukemia, Thromboembolic Disease, Heart Disease, Artery Diseases, Atherosclerosis, Aneurysms, Vein Diseases, Hypertension, Stroke, Educypedia |
| Circulatory System Heart Lungs Arteries Brain Veins Circulatory System Heart Lungs Arteries Brain Veins, pdf file |
| Control of blood pressure |
| Heart and Blood Vessel Basics blood flow through your heart and lungs, heart's electrical system, heart valves, blood vessels and blood pressure, animations |
| Het transportstelsel bloedsomloop, hart, bloed, animaties, in Dutch |
| The Heart and the Circulatory System The Anatomy of the Heart, The Pulmonary and Systemic Circuits and the Blood Supply to the Heart, The Blood Vessels, Circulatory Problems |
| Horizontaal |
| Hearth anatomy |
| Anatomy of the Heart and Cardiovascular System This process of blood flow within your body is called circulation. Arteries carry oxygen-rich blood away from your heart, and veins carry oxygen-poor blood back to your heart |
| Anatomy of the Human Heart |
| Animated heart animation |
| Cardiac Conduction System Diagram |
| Cut to the heart anatomy of the human heart, animations |
| Electrical Activity of the Heart pdf file |
| Embryonic Development of the Human Heart Embryonic Development of the Human Heart, pdf file |
| Heart |
| Heart Heart Valves, The great vessels of the heart, Coronary Blood Supply, Coronary Circulation, Conduction System, Autonomic Innervation |
| Heart anatomy |
| Heart anatomy ppt file |
| Heart anatomy the heart weighs between 7 and 15 ounces (200 to 425 grams) and is a little larger than the size of your fist. By the end of a long life, a person's heart may have beat (expanded and contracted) more than 3.5 billion times. In fact, each day, the average heart beats 100,000 times, pumping about 2,000 gallons (7,571 liters) of blood |
| Heart and stroke facts discusses the major types of heart and blood vessel (cardiovascular) disorders, pdf file |
| Heart and blood vessel anatomy Artery and vein c.s, Cardiac muscle, Artery model, Vein model, Coronary artery model with plaque deposits, Human heart model (anterior external view) |
| Heart animations animations |
| Heart information explore the heart. Discover the complexities of its development and structure. Follow the blood through the blood vessels |
| Heart the heart pumps oxygen-poor blood into the pulmonary circulation (to the lungs) and oxygen-rich blood into the systemic circulation (to the rest of the body) |
| Heart Anatomy of the heart, Hearth anatomy |
| Heart the heart is a powerful muscle, about the size of your fist. It is responsible for pumping blood to the entire body. In a healthy adult, the body contains about 2 gallons (5 liters) of blood that is circulated over and over through the body. The blood moves from the heart, into arteries, capillaries, and veins before returning to the heart |
| Heart: an online exploration from the moment it begins beating until the moment it stops, the human heart works tirelessly. In an average lifetime, the heart beats more than two and a half billion times, without ever pausing to rest |
| Heart the heart's primary function is to pump blood to all parts of the body, bringing nutrients and oxygen to the tissues and removing waste products. When the body is at rest, it needs a certain amount of blood to achieve this function. During exercise or times when greater demands are placed on the body, more blood is required, Educypedia |
| Heart |
| Heartpoint |
| Heart sounds |
| Heart sounds online |
| Heart valves heart valves: your heart valves keep blood flowing in one direction through your heart, just like the one-way valves in your home's plumbing. They open to let blood blow through, and then close to prevent blood from flowing back the way it came |
| Internal heart |
| Myocardial infarction |
| Posterior heart |
| Preview the heart explore the heart. Discover the complexities of its development and structure. Follow the blood through the blood vessels. Wander through the weblike body systems. Learn how to have a healthy heart and how to monitor your heart's health |
| Structure of the human heart |
Monday 28 March 2011
Structure and function of the human heart
The human heart is made of a unique muscle tissue, involuntarily pumping life throughout the body. Understanding its basic anatomy and function is important to understanding diseases that involve not only the heart, but also the lungs, kidneys, blood, and brain.http://www.authorstream.com/Presentation/lishalu68-165548-anatomy-physiology-medical-terminology-education-ppt-powerpoint/
Sunday 27 March 2011
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| HUMAN ANATOMY |
Human anatomy (gr. ἀνατομία, "dissection", from ἀνά, "up", and τέμνειν, "cut"), which, with human physiology and biochemistry, is a complementary basic medical science, is primarily the scientific study of the morphology of the human body. Anatomy is subdivided into gross anatomy and microscopic anatomy. Gross anatomy (also called topographical anatomy, regional anatomy, or anthropotomy) is the study of anatomical structures that can be seen by unaided vision. Microscopic anatomy is the study of minute anatomical structures assisted with microscopes, which includes histology (the study of the organization of tissues), and cytology (the study of cells). Anatomy, physiology (the study of function) and biochemistry (the study of the chemistry of living structures) are complementary basic medical sciences when applied to the human body. As such, these subjects are usually taught together (or in tandem) to students in the medical sciences.
In some of its facets human anatomy is closely related to embryology, comparative anatomy and comparative embryology,through common roots in evolution; for example, much of the human body maintains the ancient segmental pattern that is present in all vertebrates with basic units being repeated, which is particularly obvious in the vertebral column and in the ribcage, and can be traced from very early embryos.
The human body consists of biological systems, that consist of organs, that consist of tissues, that consist of cells and connective tissue.
The history of anatomy has been characterized, over a long period of time, by a continually developing understanding of the functions of organs and structures in the body. Methods have also advanced dramatically, advancing from examination of animals through dissection of preserved cadavers (dead human bodies) to technologically complex techniques developed in the 20th century.
Human body
Human body features displayed on bodies on which body hair and male facial hair has been removed
The human body is the entire structure of a human organism, and consists of a head, neck, torso, two arms and two legs. By the time the human reaches adulthood, the body consists of close to 100 trillion cells[1], the basic unit of life. These cells are organised biologically to eventually form the whole body.
Size, type and proportion
Constituents of the human body In a normal man weighing 60 kg | ||
Constituent | Weight | Percent of atoms |
Oxygen | 38.8 kg | 25.5 % |
Carbon | 10.9 kg | 9.5 % |
Hydrogen | 6.0 kg | 63 % |
Nitrogen | 1.9 kg | 1.4 % |
Calcium | 1.2 kg | 0.3 % |
Phosphorus | 0.6 kg | 0.2 % |
Potassium | 0.2 kg | 0.06 % |
The average height of an adult male human (in developed countries) is about 1.7–1.8 m (5'7" to 5'11") tall and the adult female about 1.6–1.7 m (5'2" to 5'7") tall. This size is firstly determined by genes and secondly by diet. Body type and body composition are influenced by postnatal factors such as diet and exercise
The organ systems of the body include the musculoskeletal system, cardiovascular system, digestive system, endocrine system, integumentary system, urinary system, lymphatic system, immune system, respiratory system, nervous system and reproductive system.
Anterior (frontal) view of the opened heart. White arrows indicate normal blood flow.
Cardiovascular system
The cardiovascular system comprises the heart, veins, arteries and capillaries. The primary function of the heart is to circulate the blood, and through the blood, oxygen and vital minerals are transferred to the tissues and organs that comprise the body. The left side of the main organ (left ventricle and left atrium) is responsible for pumping blood to all parts of the body, while the right side (right ventricle and right atrium) pumps only to the lungs for re-oxygenation of the blood.The heart itself is divided into three layers called the endocardium, myocardium and epicardium, which vary in thickness and function.
Digestive system
The digestive system provides the body's means of processing food and transforming nutrients into energy. The digestive system consists of the - buccal cavity, esophagus, stomach, small intestine, large intestine ending in the rectum and anus. These parts together are called the
Integumentary system
The integumentary system is the largest organ system in the human body, and is responsible for protecting the body from most physical and environmental factors. The largest organ in the body, is the skin. The integument also includes appendages, primarily the sweat and sebaceous glands, hair, nails and arrectores pili (tiny muscles at the root of each hair that cause goose bumps).
Lymphatic system
The main function of the lymphatic system is to extract, transport and metabolise lymph, the fluid found in between cells. The lymphatic system is very similar to the circulatory system in terms of both its structure and its most basic function (to carry a body fluid).
Musculoskeletal system
The human musculoskeletal system consists of the human skeleton, made by bones attached to other bones with joints, and skeletal muscle attached to the skeleton by tendons.
Bones
An adult human has approximately 206 distinct bones:
Spine and vertebral column (26)
Cranium (8)
Face (14)
Hyoid bone, sternum and ribs (26)
Upper extremities (70)
Lower extremities (62)
Nervous system
The nervous system consists of cells that communicate information about an organism's surroundings and itself.
Reproductive system
Human reproduction takes place as internal fertilization by sexual intercourse. During this process, the erect penis of the male is inserted into the female's vagina until the male ejaculates semen, which contains sperm, into the female's vagina. The sperm then travels through the vagina and cervix into the uterus or fallopian tubes for fertilization of the ovum.
The human male reproductive system is a series of organs located outside the body and around the pelvic region of a male that contribute towards the reproductive process. The primary direct function of the male reproductive system is to provide the male gamete or spermatozoa for fertilization of the ovum.
The major reproductive organs of the male can be grouped into three categories. The first category is sperm production and storage. Production takes place in the testes which are housed in the temperature regulating scrotum, immature sperm then travel to the epididymis for development and storage. The second category are the ejaculatory fluid producing glands which include the seminal vesicles, prostate, and the vas deferens. The final category are those used for copulation, and deposition of the spermatozoa (sperm) within the female, these include the penis, urethra, vas deferens and Cowper's gland.
The human female reproductive system is a series of organs primarily located inside of the body and around the pelvic region of a female that contribute towards the reproductive process. The human female reproductive system contains three main parts: the vagina, which acts as the receptacle for the male's sperm, the uterus, which holds the developing fetus, and the ovaries, which produce the female's ova. The breasts are also an important reproductive organ during the parenting stage of reproduction.
The vagina meets the outside at the vulva, which also includes the labia, clitoris and urethra; during intercourse this area is lubricated by mucus secreted by the Bartholin's glands. The vagina is attached to the uterus through the cervix, while the uterus is attached to the ovaries via the fallopian tubes. At certain intervals, typically approximately every 28 days, the ovaries release an ovum, which passes through the fallopian tube into the uterus. The lining of the uterus, called the endometrium, and unfertilized ova are shed each cycle through a process known as menstruation.
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