How do you describe sinuses?

How do you describe sinuses?

The sinuses are four paired cavities (spaces) in the head. They are connected by narrow channels. The sinuses make thin mucus that drains out of the channels of the nose. This drainage helps keep the nose clean and free of bacteria.

What describes sinuses in the respiratory system?

The SINUSES are hollow spaces in the bones of your head. Small openings connect them to the nasal cavity. The sinuses help to regulate the temperature and humidity of the air your breathe in, as well as to lighten the bone structure of the head and to give tone to your voice.

What is known as sinus?

A sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage caused by the destruction of tissue. In common usage, “sinus” usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it.

What is a sinus in anatomy?

A sinus is defined as: A channel that is not a blood or lymphatic vessel that allows for the passage of blood or lymph, such as found in the placenta, sinuses, or the cerebral meninges. A cavity or hollow space in bone or other tissue.

What are sinuses in the heart?

The sinus node is an area of specialized cells in the upper right chamber of the heart. This area controls your heartbeat. Normally, the sinus node creates a steady pace of electrical impulses.

What is a sinus quizlet?

Air containing cavities situated in the frontal, ethmoidal, and sphenoid bones of the cranium and the maxillary bones of the face. Sinuses.

What are the sinuses and their function?

Purposes of the Sinuses The sinuses lighten the skull or improve our voices, but their main function is to produce a mucus that moisturizes the inside of the nose. This mucus layer protects the nose from pollutants, micro-organisms, dust and dirt.

What are sinuses anatomy and physiology?

sinus, in anatomy, a hollow, cavity, recess, or pocket; a large channel containing blood; a suppurating tract; or a cavity within a bone. Two types of sinus, the blood-filled and the air-filled sinuses, are discussed in this article.

What is a sinus heart?

The sinoatrial or sinus node is located in the upper chamber on the right side of the heart, which is called the right atrium. The sinus node is known as the heart’s natural “pacemaker,” meaning it is responsible for the rhythm of a person’s heartbeats. Normal sinus rhythm is a regular rhythm found in healthy people.

What are the cranial sinuses?

The dural venous sinuses (also called dural sinuses, cerebral sinuses, or cranial sinuses) are venous channels found between the endosteal and meningeal layers of dura mater in the brain.

What are sinuses in the brain?

venous sinus, in human anatomy, any of the channels of a branching complex sinus network that lies between layers of the dura mater, the outermost covering of the brain, and functions to collect oxygen-depleted blood. Unlike veins, these sinuses possess no muscular coat.

What does sinuses mean?

(February 2007) A sinus is a sac or cavity in any organ or tissue, or an abnormal cavity or passage caused by the destruction of tissue. In common usage, “sinus” usually refers to the paranasal sinuses, which are air cavities in the cranial bones, especially those near the nose and connecting to it.

What are the signs of a sinus infection?

Sinus Infection: Sinus infections and sinusitis is a condition in which the sinuses become inflamed and/or infected. Sinus infection symptoms and signs include bad breath, runny or stuffy nose, or nasal congestion, facial pain and swelling, tooth pain, ringing in the ears, sinus headache, fever, sore throat and cough.

Which are sinuses located just above the eyes?

There are four pairs of sinuses (named for the skull bones in which they are located): Frontal sinuses: The right and left frontal sinuses are located in the center of the forehead (frontal bone) just above each eye.

What is a bad sinus infection?

Sinus infection, or sinusitis, is an inflammation of the sinuses and nasal passages. A sinus infection can cause a headache or pressure in the eyes, nose, cheek area, or on one side of the head. A person with a sinus infection may also have a cough, sore throat, fever, bad breath, and nasal congestion with thick nasal secretions.