Your heart is surrounded by a double-layered membrane, called the pericardium or pericardial sac. This membrane keeps your heart in place in your chest cavity, restricts the expansion of your heart when your blood volume increases, and helps to protect your heart.
How is your heart protected from injury?
The bones of the chest — namely the rib cage and spine — protect vital organs from injury, and also provide structural support for the body. The rib cage is one of the body’s best defenses against injury from impact. Flexible yet strong, the rib cage protects major vital organs such as the heart, lungs, and liver.
How is the heart protected externally and internally?
The pericardium, which literally translates as “around the heart,” consists of two distinct sublayers: the sturdy outer fibrous pericardium and the inner serous pericardium. The fibrous pericardium is made of tough, dense connective tissue that protects the heart and maintains its position in the thorax.
What is the bone that protects the heart?
The ribs are connected to the sternum with a strong, somewhat flexible material called cartilage. The rib cage help protects the organs in the chest, such as the heart and lungs, from damage.
How does the rib cage protect the heart?
Together with the anterior ribs, the sternum helps to protect the heart and lungs from damage, as well as facilitates the expansion and contraction of the thoracic cavity during respiration.
Does the heart lie behind the left chest wall?
Your heart is about the size of your clenched fist. It lies in the front and middle of your chest, behind and slightly to the left of your breastbone.
What are the two pumps in the heart called?
The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve. The left atrium receives oxygen-rich blood from the lungs and pumps it to the left ventricle through the mitral valve. The left ventricle pumps the oxygen-rich blood through the aortic valve out to the rest of the body.
Which of following is a membrane that covers the heart?
Your heart is surrounded by a double-layered membrane, called the pericardium or pericardial sac.
What is apex and base of heart?
The apex (the most inferior, anterior, and lateral part as the heart lies in situ) is located on the midclavicular line, in the fifth intercostal space. It is formed by the left ventricle. The base of the heart, the posterior part, is formed by both atria, but mainly the left.
Which organs are protected by bones?
- Allows movement: Your skeleton supports your body weight to help you stand and move. …
- Produces blood cells: Bones contain bone marrow. …
- Protects and supports organs: Your skull shields your brain, your ribs protect your heart and lungs, and your backbone protects your spine.
Why do bones weaken as a person gets older?
As you age, your body may reabsorb calcium and phosphate from your bones instead of keeping these minerals in your bones. This makes your bones weaker.