April 14, 2014
Biology 2 Lab
Fetal Pig Dissection: Respiratory and Digestive Systems
-Three pairs of exocrine glands in the mouth that secrete saliva; the parotid, submandibular (sub maxillary), and sublingual glands The parotid is the largest and most easily visible of all the salivary glands. The sunbmaxillary is bean shaped and located under the bigger parotid gland. The submandibular gland lies near the jaw line. Glottis
-The opening between the vocal cords at the upper part of the larynx. The epiglottis is what covers the glottis during swallowing, to block food/water form getting in the trachea. Epiglottis
-The function of the epiglottis in a pig is to prevent food from going into the trachea. Epiglottis is attached to the entrance of the larynx and is made of elastic cartilage. The epiglottis projects up through the soft palate into a region called the nasopharynx Thymus Gland
-Gland located near the heart; produces several hormones which stimulate development of cells important in immmunity Thyroid Gland
-Endocrine gland located below the voice box; it produces hormones which control metabolism. The thyroid gland is darker and lies between the posterior ends of the two lobes of the thymus gland. Esophagus
-Muscular tube that moves food from the pharynx to the stomach. The esophagus is dorsal to the trachea. Vocal Chords
-To breathe, oxygenize blood
- At end of trachea, branches for air to enter lungs.
- Digests food, breaks it down
- Finishes digestion, absorbs nutrients, moves food to large intestine Large Intestine
- Larger tubular structure that receives the liquid waste products of digestion, reabsorbs water and minerals, and forms and stores feces for defecation Rectum
- A short tube at the end of the large intestine where waste material is compressed into a solid form before being eliminated; straight, posterior part of...
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