The smooth muscle in the lungs fills up with air when breathing in and contracts when breathing out. The cells are spindle-shaped and the nucleus is oval shaped.
Alveoli:(made of lung tissue)
Alveoli are only one cell thick and this is also where gas exchange takes place. They bring carbon dioxide from the heart through the pulmonary artery, and bring oxygen back to the heart through the pulmonary vein.
Trachea:
Cartilage is made of Chondrocytes. Chondrocytes are round and tightly packed together to allow for nutrient distribution because they don't have any blood vessels so the only way that they can get their nutrients, is from diffusion.
Larynx:
The larynx is made of Cartilage and cartilage is made of several pieces of this smooth, shiny tissue. The cartilage is also surrounded by a fibrous tissue. Suspended inside the larynx are two bands of smooth muscle. Unlike most other organs containing smooth muscle, the larynx is not surround by smooth muscle. The smooth muscle is inside the larynx. The muscle bands are in the shape of a V, and when you breathe out, air passes through and causes the muscles to vibrate, generating our voice.
Epiglottis:
The epiglottis is a flap made of cartilage that is positioned where the esophagus and the trachea diverge. When you swallow, muscles attached to the hyoid bone pull the epiglottis in to a position that deflects food from the trachea to keep food from entering the lungs. It also prevents liquids, as well as food, which can enter the lungs and choke up broncioles. It is one of a few measures to keep the lungs from being infected.
Nose:
The nose is made up of cartilage, skin, nerve receptors, cilia, and mucous membranes. The cartilage is made up of Chondrocytes the cartilage also gives structure to the nose. The skin covers the outside of the nose and is the first protective layer (first line of defense). The nerve receptors send electrical impulses to the brain that sense smell. The cilia are microscopic hairs that wave back and forth which moves the mucous back into the nasal cavity to trap dust, dirt, microorganisms, and pollen. The mucous membranes trap dirt so it can't get into our lungs.
Smooth muscle:
The smooth muscle in the lungs fills up with air when breathing in and contracts when breathing out. The cells are spindle-shaped and the nucleus is oval shaped.
Alveoli:(made of lung tissue)
Alveoli are only one cell thick and this is also where gas exchange takes place. They bring carbon dioxide from the heart through the pulmonary artery, and bring oxygen back to the heart through the pulmonary vein.
Trachea:
Cartilage is made of Chondrocytes. Chondrocytes are round and tightly packed together to allow for nutrient distribution because they don't have any blood vessels so the only way that they can get their nutrients, is from diffusion.
Larynx:
The larynx is made of Cartilage and cartilage is made of several pieces of this smooth, shiny tissue. The cartilage is also surrounded by a fibrous tissue. Suspended inside the larynx are two bands of smooth muscle. Unlike most other organs containing smooth muscle, the larynx is not surround by smooth muscle. The smooth muscle is inside the larynx. The muscle bands are in the shape of a V, and when you breathe out, air passes through and causes the muscles to vibrate, generating our voice.
Epiglottis:
The epiglottis is a flap made of cartilage that is positioned where the esophagus and the trachea diverge. When you swallow, muscles attached to the hyoid bone pull the epiglottis in to a position that deflects food from the trachea to keep food from entering the lungs. It also prevents liquids, as well as food, which can enter the lungs and choke up broncioles. It is one of a few measures to keep the lungs from being infected.
Nose:
The nose is made up of cartilage, skin, nerve receptors, cilia, and mucous membranes. The cartilage is made up of Chondrocytes the cartilage also gives structure to the nose. The skin covers the outside of the nose and is the first protective layer (first line of defense). The nerve receptors send electrical impulses to the brain that sense smell. The cilia are microscopic hairs that wave back and forth which moves the mucous back into the nasal cavity to trap dust, dirt, microorganisms, and pollen. The mucous membranes trap dirt so it can't get into our lungs.