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Croup
...  requests for tests to be done such as complete blood count, X-rays and culture of the suspected pathogen as needed. Croup, also known as laryngotracheobronchitis, leads to swelling of the larynx, trachea and large bronchi. Infection causes the swelling (due to the infiltration of white blood cells). The swelling interferes with normal breathing and causes the characteristic  ...

Lungs
...  the right lung is divided into three. The lungs are located in the chest cavity inside the rib cage. They are made of elastic, spongy tissue as they stretch out and constricts while you breathe. The trachea and the bronchi are the airways that bring the air to the lungs. They are made of smooth muscle and cartilage, which allows the airways to constrict and expand. The duty of the lungs and the  ...

Nose
...  process begins with the inhalation of air through the nostrils going to the nasal passages. The air then travels to the nasal cavity and into the back of the throat going into the windpipe or the trachea. The air is filtered from foreign objects by the cilias that are found in the trachea, and this air goes to the lungs. The old air in the lungs also goes out of the nose, which is what we  ...

Trachea
...  bony tube that connects the lungs to the nose and the mouth is called the trachea. It is commonly known as the windpipe and it plays an important role in the respiratory system. It is through the trachea that the air flows into our lungs, which is needed for respiration. It extends downward, coming from the base of the voice box or the larynx. Part of it lies in the neck, and the other part  ...

Neck Muscles
...  and may be injured by whiplash. Infrahyoid and suprahyoid – these muscles are for opening the jaw and for flexing the neck, and are found in the anterior neck area. They are found above the trachea. Splenius capitis, splenius cervsi and the semispinalis capitis muscles – the splenius is used for neck rotation, while the semispinalis is used for neck flexion. They are found in the  ...

Aortic Arch
...  The arch of the aorta starts at the height of the upper portion of the second sternocostal articulation of the right side. It then runs upward, then backward, and then to the left in front of the trachea. Afterwards, it goes backward on the left side of the trachea and finally, it passes downward on the left side of the body of the fourth thoracic vertebra. At the lower border of the thoracic  ...

Thyroid Gland
...  thyroid gland is situated in the neck, with each lobe on each side of the trachea. A lobe measures 2 inches in length, connected by a stub of tissue known as the isthmus. The thyroid is the biggest of all the endocrine glands, specifically found beneath the larynx. This organ’s high denmand for vascular support is satisfied by the two branches of the external carotid arteries, and the  ...


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