What is bony thoracic cage

The bony thoracic cage consists of the ribs, sternum, and thoracic spine, in addition to the humerus, clavicle, and scapula of the shoulder girdle. Also there are many small and one large (discovertebral) articulations in the thorax.

What are the bones of the thoracic cage?

The thoracic cage (rib cage) is the skeleton of the thoracic wall. It is formed by the 12 thoracic vertebrae, 12 pairs of ribs and associated costal cartilages and the sternum. The thoracic cage takes the form of a domed bird cage with the horizontal bars formed by ribs and costal cartilages.

Where is the thoracic cage?

The thoracic cage (rib cage) forms the thorax (chest) portion of the body. It consists of the 12 pairs of ribs with their costal cartilages and the sternum (Figure 1). The ribs are anchored posteriorly to the 12 thoracic vertebrae (T1–T12).

What are the four parts of the thoracic cage?

Components of the Thoracic Cage. The thoracic cage is comprised of all thoracic vertebrae, the ribs, and the sternum, and also connects with the clavicle (collar bone), and the scapula (shoulder blade).

Why is the thoracic cage important?

The rib cage protects the organs in the thoracic cavity, assists in respiration, and provides support for the upper extremities. During inspiration the ribs are elevated, and during expiration the ribs are depressed.

What organs does the thoracic cage protect?

The rib cage surrounds the lungs and the heart, serving as an important means of bony protection for these vital organs.In total, the rib cage consists of the 12 thoracic vertebrae and the 24 ribs, in addition to the sternum.

Why is the thoracic cage flexible?

Although that is one key function, the ribcage does so much more. It provides vital support as part of the skeleton and, simply put, breathing wouldn’t be possible without it. All this means that the ribcage has to be flexible. The conical structure isn’t just a rigid system of bone – it’s both bone and cartilage.

What are 3 types of ribs?

According to their attachment to the sternum, the ribs are classified into 3 groups: true, false, and floating ribs.

How many bones are present in thoracic cage?

A typical human thoracic cage consists of 12 pairs of ribs and the adjoining costal cartilages, the sternum (along with the manubrium and xiphoid process), and the 12 thoracic vertebrae articulating with the ribs.

Is the thoracic cage part of the axial skeleton?

The axial skeleton includes all the bones along the body’s long axis. … The axial skeleton includes the bones that form the skull, laryngeal skeleton, vertebral column, and thoracic cage.

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What is the difference between male and female ribs?

The Adam and Eve story has led some people to believe that men have one fewer rib than women. This isn’t true. The vast majority of people have 12 sets, or 24 ribs, no matter their sex. People born with certain conditions may have too many or too few ribs.

What is between the bottom of your ribs?

The diaphragm is a mushroom-shaped muscle that sits beneath your lower-to-middle rib cage. It separates your abdomen from your thoracic area. Your diaphragm helps you breathe by lowering when you inhale, in that way, allowing your lungs to expand. It then rises to its original position when you exhale.

How does the ribcage protect the lungs?

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.

Can you live without a rib cage?

You can still have a fairly normal life without one of your lungs, a kidney, your spleen, appendix, gall bladder, adenoids, tonsils, plus some of your lymph nodes, the fibula bones from each leg and six of your ribs.

Do you need ribs to survive?

The ribs have two essential functions: They protect the vital organs found in the chest, including the heart, lungs, part of the liver, and spleen. They maintain space in the chest, so the lungs can expand and contract during the breathing process.

What are the three functions of the thoracic cage?

The thoracic cage functions to protect the heart and lungs. The sternum consists of the manubrium, body, and xiphoid process. The manubrium forms the expanded, superior end of the sternum.

What does sternum pain mean?

Sternum pain is usually caused by problems with the muscles and bones near the sternum and not the sternum itself. Pain felt just behind or below the sternum is called substernal pain and is sometimes caused by gastrointestinal problems. Some of the most common causes of sternum and substernal pain are: costochondritis.

Which ribs are false ribs?

The false ribs are the ribs that indirectly articulate with the sternum, as their costal cartilages connect with the seventh costal cartilage; by the costochondral joint; They are the eighth, ninth, and tenth ribs.

Which bones protect the brain?

The skull protects the brain and forms the shape of the face. The spinal cord, a pathway for messages between the brain and the body, is protected by the backbone, or spinal column.

What are the 8 appendicular bones?

• Upper Limb.
• Shoulder girdle: Clavicle. Scapula. Arm. Humerus. Forearm. Radius. Ulna. Wrist or carpal bones. Scaphoid. Lunate. Triquetrum. Pisiform. Trapezium. …
• Lower Limb.
• Pelvic girdle (hip or coxal bone) Ilium. Ischium. Pubis. Thigh. Femur. Leg. Tibia. Fibula. Tarsal bones. Talas. Calcaneus. Cuboid.

What are three parts of the sternum?

The sternum is divided anatomically into three segments: manubrium, body, and xiphoid process.

Which ribs break the easiest?

The middle ribs are most commonly fractured. Fractures of the first or second ribs are more likely to be associated with complications. Diagnosis can be made based on symptoms and supported by medical imaging. Pain control is an important part of treatment.

Why do I have pain in my ribs?

Rib cage pain can be caused by a variety of things, ranging from pulled muscles to a rib fracture. The pain may occur immediately upon injury or develop slowly over time. It can also be a sign of an underlying medical condition. You should report any instance of unexplainable rib cage pain to your doctor immediately.

How do I identify my ribs?

Since the first rib is hidden behind the clavicle, the second rib is the highest rib that can be identified by palpation. Thus, the sternal angle and second rib are important landmarks for the identification and counting of the lower ribs. Ribs 3–7 attach to the sternal body.

What are the 80 bones of the axial skeleton?

• The skull, which contains 22 bones, from which 8 are cranial and 14 are facial,
• 6 middle ear ossicles (3 in each ear),
• 1 hyoid bone in the neck,
• 26 bones of vertebral column,
• 1 chest bone (sternum), and.
• 24 ribs (12 pairs).

What are types of bones?

There are five types of bones in the skeleton: flat, long, short, irregular, and sesamoid.

Which bone is not part of the axial skeleton?

The humerus is the bone that makes up the upper arm of both upper extremities. This bone is part of the appendicular skeleton. Therefore, the correct answer is (c) Humerus.

How can you tell if a skeleton is male or female?

A female’s skeleton is usually much smoother and less knobby than a male’s. A male’s skeleton is usually thicker, rougher and appears more bumpy. ○ Due to the fact that males have larger muscles and therefore their skeletons require stronger attachment sites.

Who has an extra rib?

About 1 in 200 people are born with an extra rib called a cervical rib. Because this is something that you are born with, it is known as a congenital condition. At the back, this rib connects to the seventh cervical vertebra in your neck.

Why does my sternum stick out?

Pectus carinatum is a genetic disorder of the chest wall. It makes the chest jut out. This happens because of an unusual growth of rib and breastbone (sternum) cartilage . The bulging gives the chest a birdlike appearance.

What is Tietze's syndrome?

Tietze syndrome is a rare, inflammatory disorder characterized by chest pain and swelling of the cartilage of one or more of the upper ribs (costochondral junction), specifically where the ribs attach to the breastbone (sternum). Onset of pain may be gradual or sudden and may spread to affect the arms and/or shoulders.