Fetal Pig Dissection Essay

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Fetal Pig Dissection Essay
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  • University/College:
    University of California

  • Type of paper: Thesis/Dissertation Chapter

  • Words: 457

  • Pages: 2

Fetal Pig Dissection

-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

Lungs
-To breathe, oxygenize blood
Bronchi
– At end of trachea, branches for air to enter lungs.
Stomach
– Digests food, breaks it down
Small Intestine
– 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 large intestine Cecum
– The cecum houses a large number of bacteria that help in digestion of plant materials, mostly cellulose, that remains undigested in the stomach and small intestine. Appendix
– Evolutionary remains of a larger cecum
Anus
– It allows the pig to release waste
Liver
– Organ that makes bile to break down fats; also filters poisons and drugs out of the blood Pancreas
– Gland that produces hormones that regulate blood sugar; produces enzymes that break down carbohydrates, proteins, lipids, and nucleic acids; and produces sodium bicarbonate, a base that neutralizes stomach acid Spleen

– Organ near the stomach that produces, stores, and eliminates blood cells

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Fetal pig dissection Essay

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Fetal pig dissection Essay
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  • University/College:
    University of California

  • Type of paper: Thesis/Dissertation Chapter

  • Words: 490

  • Pages: 2

Fetal pig dissection

Through the dissection of the fetal pig, we were able to compare and contrast the structure and functions of the organs to those of a human. We dissected the pig and observed all the exterior and interior structures. The fetal pig’s structure was almost identical to the human body. Since humans and pigs are both mammals, it can be very useful to study the fetal pig. We dissected the pig so that we should see the skeletal and organ structures that we learned about in class. Because pigs are also mammals, their structure is very similar to our own. By doing the dissection, we were able to physically see and touch the anatomy of the mammalian body rather seeing it solely in text form. This gives us a better idea of how the structures are intertwined to form the body as a whole. On the first day of the lab I observed the pig’s digestive system which includes the liver,small intestines, large intestine, and the pancreas. The liver was the largest organ in the fetal pig’s body and was shaped like small bean bag.

I was actually surprised when seeing the small intestine because I didn’t know it was bigger than the large intestine, it was a series of long brown tubes. The pancreas of a fetal pig is along the bottom of the stomach. The pancreas is a bumpy yellowish brown gland. Pigs teeth have to be sharp and pointed so they can chew their food well so it can be transferred to the stomach. The hard palate has to be hard and rippled so their food can be broken down easier, while it’s being chewed it will hit the hard palate and break down easily.The Epiglottis is a flap of skin that makes sure no food gets into the Respiratory tract. The lungs looked like a pair of bird wings, we pumped air into it and saw how it moved. The trachea was a long tube with 3 small hole’s in it.

The heart was the best part of the dissection because it looked like a series of tube’s put together to create it. I was surprised by how the aorta looked. The value of students dissecting a mammal, especially a pig is important because most students like to touch the thing they are dissecting. A pig gives us a chance to visualize and help us understand the systems in a mammal. My feeling about dissecting a pig is nervous because it is a real pig even though it is fetal. I feel like I will end up cutting the pig in the wrong spot. I was also excited to dissect the pig because I have never experienced this before and think it was a great learning experience for me.

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Fetal Pig Dissection Essay

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Fetal Pig Dissection Essay
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  • University/College:
    University of Chicago

  • Type of paper: Thesis/Dissertation Chapter

  • Words: 245

  • Pages: 1

Fetal Pig Dissection

1. How do the locations of the endocrine organs in the fetal pig compare with those in the human?

The pigs pancreas is above the kidneys and adrenal gland in the pig. The thymus covers the thyroid in the pig. For the humans though, they have thymus above the thyroid.

2. Name the two endocrine organs located in the throat region The thymus and the thyroid are both in the throat region

3. Name 3 endocrine organs located in the abdominopelvic cavity. The three endocrine organs located in the abdominopelvic cavity are the gonads, adrenal, and the glands pancreas.

4.Given the assumption (not necessarily true) that human beings have more stress than adult pigs, which endocrine organs would you expect to be relatively larger in humans. The adrenal glands because they are the organs that mostly deal with stress to maintain homeostasis in the body.

5. Explain why the thymus gland in the fetal pig is so large relative to an adult pig. Their thymus gland is more active during a younger age to develop the immune system and produce defense cells to protect the body. The fetal pig has a larger thymus than an adult pig because the adult pigs thymus shrunk overtime, which will happen to a fetal pig as it gets older

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