Human Heart Anatomy
August 20, 2020, 05:34 PM IST
The heart is oxygen found in every vertebrate. It is a very strong muscle. It is on the left side of the body in humans and is about the size of the body. It has regular contractions, or when the heart squeezes the blood out into other parts of the body. The human heart is pinkish about the size of a fist and weighs approx. 300 gms, the weight in females being about 25% lesser than the males. It is a hallow, highly muscular, a cone-shaped structure located in the thoracic cavity above the diaphragm in between the two lungs. It is protected by ribcage.the narrow end of the triangular heart is pointed to the left side, during working this end gives a feeling of the heart being on the left side.
Location of heart: Heart is right in the center between the two lungs and above the diaphragm in the ribcage. The narrow end of the roughly triangular heart is pointed to the left side and during working the contraction end giving a feeling of the heart being on the left side. External Structure: The heart is surrounded by a two-layered tissue membrane called the pericardium. The space between the two layers is filled protects the heart from external pressure push, shock, and reduces friction during the heartbeat and facilities free heart contraction. Internal Structure: The heart is composed of outer pericardial, middle myocardial, and inner endocardial layers. The heart consists of 4 chambers. The two thin-walled auricles.
Which are the upper chamber ( right and left)?
Right, and left auricle is separated from each other by an inter auricular septum. Right auricle receives deoxygenated blood from the body part by anterior and posterior vena cava. The two thick-walled lower chamber. (Right and left) are called ventricles. Right, and left ventricle is separated by an inter-ventricles septum.
Blood vessels entering and leaving the heart:
1.(a). Superior vena cava: It being deoxygenated blood from anterior body parts (head, neck, and arm's)to the right auricle.
(b). Posterior vena cava: Prem City oxygenated blood from the posterior all over body parts i.e; abdomen and legs to the right auricle.
It is the largest vein.
1. Arteries: the arteries are the blood vessels that delivered oxygen-rich blood from the heart to the tissue of the body. An artery is a muscular tube lined by smooth and has three-layer: the intima, the thinner layer lined by a smooth tissue called the endothelium.
2. Aorta: The aorta is the main artery that carries blood away from for heart of the rest of your body. After the blood leaves the heart through the aortic valve, it travels through the aorta, making a cone-shaped curve that connects with other major arteries to deliver oxygen-rich blood to the brain, muscles, and other cells.
3. Pulmonary artery: the pulmonary artery carries deoxygenated blood from the right ventricle to the lungs.
4. Pulmonary veins: the pulmonary veins are the ones that transfer oxygenated blood from the lungs to the heart.
5. Left atrium: the upper right chamber of the heart. the RTM receives oxygenated blood from the lungs and performs it done into the left ventricle which delivers it to the body.
6. Mitra (bicuspid) valve: the between the two atria and the left ventricle of the heart, which has two tapered cups.
7. Left ventricle: the left ventricle is one of four chambers of the heart. As the heart contracts, blood eventually flows back into the left atrium and then thought the mitral valve, whereupon it next enters the left ventricle.
8. Septum: the septum is the cartilage in the nose that separates the nostrils.
9. Aorta: The aorta is the largest artery in the blood. The heart pumps blood from the left ventricle into the aorta through the aortic valve.
10. Inferior vena cava: it carries deoxygenated blood from the lower half of the body to the right atrium of the heart.
11. Superior vena cava: the superior vena cava (SVC) is the superior of the two vena. It is the large-diameter (24mm) short length veins that receive a venous return from the upper half of the body, about the diaphragm.
12. Pulmonary veins: the pulmonary veins are the ones that transfer oxygenated blood from the lungs to the heart. The pulmonary veins are part of the pulmonary circulation.
13. Right atrium: the right atrium upper chamber of the heart. the right atrium receives oxygenated blood from the body through the vena cava.
14. Tricuspid valve: the tricuspid valve is one of the two main valves on the right side of your heart.
15. Right ventricle: the lower right chamber of the heart that receives deoxygenated blood from the right atrium and pumps. The under low pressure into the lungs via the pulmonary artery.