Biology 119 - SHEEP LUNG & LARYNX PHOTOS

SHEEP LUNGS & LARYNX

Respiration Tests Human Lungs Biology 119 Home Page

Click on each image to see the larger version.

Posterior Views of Sheep Larynx

The most dorsal region is part of the tongue. Below that, the pointed epiglottis is visible. The vertical cut is through part of the esophagus which is posterior to the larynx.
The epiglottis is fully exposed. The esophagus is held open with a student's thumbs. This exposes the vertical cut through the larynx. The white material in the cut section is the cartilage that supports the larynx.

This is a closer look at the interior of the larynx. The white material in the cut section is the cartilage that supports the larynx. The folds in the interior are the vocal folds.
Part of the sheep's trachea has been cut to show the white cartilage rings that keep this airway open.

Sheep Lungs

This view shows the dorsal side of the sheep's lungs. The trachea is cut but extends off to your left between the lungs. The lower lung has had part of the visceral pleural membrane pulled back. The other structure between the lungs is part of the aorta.
This close up view of the ventral side of a sheep's lungs exposes a small part of the diaphragm showing some of it's skeletal muscle & connective tissues. When the diaphragm contracts, air pressure in the lungs drops and we can inhale. At your left is the cut primary bronchus.

This is a close-up view of a cut section of a sheep lung. Some of the bronchi are visible because these airways are supported by cartilage & do not collapse. Alveoli & bronchioles are too small & collapse so they aren't visible.
This is a section of dried sheep lung. The primary bronchus is the large cylinder to the right. Smaller bronchi are visible throughout the section, as they are in the image to your left.

The most dorsal region is part of the tongue. Below that, the pointed epiglottis is visible. The vertical cut is through part of the esophagus which is posterior to the larynx.	The epiglottis is fully exposed. The esophagus is held open with a student's thumbs. This exposes the vertical cut through the larynx. The white material in the cut section is the cartilage that supports the larynx.
This is a closer look at the interior of the larynx. The white material in the cut section is the cartilage that supports the larynx. The folds in the interior are the vocal folds.	Part of the sheep's trachea has been cut to show the white cartilage rings that keep this airway open.

This view shows the dorsal side of the sheep's lungs. The trachea is cut but extends off to your left between the lungs. The lower lung has had part of the visceral pleural membrane pulled back. The other structure between the lungs is part of the aorta.	This close up view of the ventral side of a sheep's lungs exposes a small part of the diaphragm showing some of it's skeletal muscle & connective tissues. When the diaphragm contracts, air pressure in the lungs drops and we can inhale. At your left is the cut primary bronchus.
This is a close-up view of a cut section of a sheep lung. Some of the bronchi are visible because these airways are supported by cartilage & do not collapse. Alveoli & bronchioles are too small & collapse so they aren't visible.	This is a section of dried sheep lung. The primary bronchus is the large cylinder to the right. Smaller bronchi are visible throughout the section, as they are in the image to your left.