Why is thorax region important in insect body?
The thorax is the middle segment, behind the head and before the abdomen. The six legs and two pairs of wings (if present) are attached to the thorax. The thorax contains the locomotive musculature and is also well supplied with trachae to supply the muscles with oxygen.
What does a thorax do for an insect?
The thorax is the midsection (tagma) of the insect body. It holds the head, legs, wings and abdomen. It is also called mesosoma or cephalothorax in other arthropods.
What are the three parts of thorax?
The middle tagma, or thorax, comprises three large segments: prothorax (anterior most segment), mesothorax (middle), and metathorax (posterior) (Figure 33.3).
What is another word for thorax?
What is another word for thorax?
| chest | breast |
|---|---|
| sternum | torso |
| trunk | heart |
| peritoneum | ribs |
| upper body | mammary glands |
What does thorax mean in medical terms?
Thorax: The area of the body that is located between the abdomen and the neck. Within the thorax are the lungs, the heart, and the first section of the aorta. Also known as chest.
What is the thorax in humans?
The thorax is the region between the abdomen inferiorly and the root of the neck superiorly. [1][2] It forms from the thoracic wall, its superficial structures (breast, muscles, and skin) and the thoracic cavity.
What are 5 organs found in the thoracic cavity?
The organs of the thorax include the thymus gland, the breasts, the heart, the lungs, the tracheobronchial tree and the pleurae. The thymus gland is located in the superior mediastinum of the thoracic cavity but may also extend into the neck.
Does a human have a thorax?
In humans and other hominids, the thorax is the chest region of the body between the neck and the abdomen, along with its internal organs and other contents. It is mostly protected and supported by the rib cage, spine, and shoulder girdle.
What is a thorax CT scan looking for?
A CT scan of the chest can help find problems such as infection, lung cancer, blocked blood flow in the lung (pulmonary embolism), and other lung problems. It also can be used to see if cancer has spread into the chest from another area of the body.
Why would you have a thorax scan?
To determine the size, shape, and position of organs in the chest and upper abdomen. To look for bleeding or fluid collections in the lungs or other areas. To look for infection or inflammation in the chest. To look for blood clots in the lungs.
Why would a doctor order a CT scan of the lungs?
Many times, a CT scan is ordered by a doctor after noticing something abnormal in an X-ray. Although the CT scan cannot give a definitive diagnosis, it is helpful in the evaluation of lung diseases and conditions such as pneumonia, cancer, blood clots or damage caused by smoking.
Where is the thorax and what does it do?
The thorax, consisting of the thoracic vertebrae, the ribs, and the sternum (Figs. 5–1A and B), has several important functions. It provides a base for the muscle attachment of the upper extremities, the head and neck, the vertebral column, and the pelvis.
What are the boundaries for the thoracic cavity?
The Pericardial and Pleural Cavities along with the Mediastinum make up the Thoracic Cavity. The boundaries of the Thoracic Cavity are the Ribs (and Sternum), Vertebral Column, and the Diaphragm. The Diaphragm seperates the Thoracic Cavity from the Abdominal Cavity.
Is the thorax the chest?
Anatomical differences in thorax structure between amphibians, mammals, and insects. Encyclopædia Britannica, Inc. In vertebrates (fishes, amphibians, reptiles, birds, and mammals), the thorax is the chest, with the chest being that part of the body between the neck and the abdomen.
Are the lungs in the thoracic cavity?
The thoracic cavity has three compartments: the mediastinum and two pleural cavities. The mediastinum is home to the heart, trachea, great vessels, and some other structures. The pleural cavities are on either side of the mediastinum and contain the lungs and the pleural linings.
What happens to the thorax during inhalation?
Breathing in When you breathe in, or inhale, your diaphragm contracts and moves downward. This increases the space in your chest cavity, and your lungs expand into it. The muscles between your ribs also help enlarge the chest cavity. They contract to pull your rib cage both upward and outward when you inhale.
What are the two changes that take place in the chest region during the process of inhalation?
During the process of inhalation, the muscles of diaphragm contract, diaphragm flattens and size of thoracic cavity increases so that large amount of air (oxygen) can enter into the lungs.