anatomía animal inst. suheidy valentín biol 3052l
TRANSCRIPT
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Anatomía Animal
Inst. Suheidy Valentín
Biol 3052L
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Introducción al feto del cerdo
• Los fetos o los cerdos sin nacer se obtienen de cerdas preñadas y que las van a matar para comida.
• El tamaño del feto dependerá del estado de gestación.
• Se embalsaman en formaldehido de una solución a base de fenol, los cerdos se guardan en un preservativo que usualmente no contiene formaldehido pero retiene el olor. Se tiene que usar guantes para trabajar con el feto.
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Fetal pigs are often used in Anatomy and Physiology classes because of the similarities between organ appearance and
relative position to that of a human. These pigs are by-products of the meat industry that have been preserved for
use in the science classroom.
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• . Identificar las regiones del cuerpo:
• cabeza (cranial) region• cuello (cervical) region• region de tronco (thoracic region)• cola (caudal) region (abdomoninal
region)• 4. Cabeza: Encontrar:• pinna (auricle):oído externo• huecos nasales• Parpados superiores y el bajo• nictitating membrane (tercer
parpado)
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. Tronco- se divide en tórax anterior encasillado por las costillas y un abdomen posterior
cordon umbilical- superficie ventral del abdomen. Vasos sanguíneos pasan de la placenta, enlazados a la pared del utero de la madre al feto del cerdo atravez del cordonCortar un poco (0.5 cm) del cordon para ver :
•Arterias umbilicales: 2 arterias, llevansangre deoxigenada del feto a la placenta
• Vena umbilical : una sola vena grande, lleva sangre oxigenada de la placenta al feto
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•
The two arteries and one vein (upper left) of the umbilical cord are surrounded by a large amount of connective tissue.
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• Apendices: Examinar las patas Encontrar:
• hombro, codo, muñeca, y los digitos.
• cadera, rodilla
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The illustration shows where the incisions are made in the fetal pig to order to view the internal organs properly.
Remember: be very careful in your cuts, you don't want to destroy any interesting organs underneath the skin
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This is the second cut made to open the fetal pig. The third cut(s) are made from the
posterior end of the first cut and down along
either side of the umbilical cord.
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Incisiones para abrir la cavidad bucal
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Glotis
Epiglotis
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Paladar duro Apertura
nasofaringeal
Paladar suave
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Sist. Respiratorio
• Remover los músculos en la region del cuello , para exponer la glándula del timo en cada lado del cuello
-esta glandula es grande en el feto y en mamiferos jovenes con la edad disminuye , juega un papel importante el sist. inmuno. del cuerpo
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The Trachea
The trachea is also called the windpipe. These structures can be hard to see in a fetal pig, but are fairly easy to feel.
If you use your scalpel to open the pig throat, you will feel a harder, ringed structure. Put the scaplel down and feel it with you fingers. This is the trachea
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Sist. Digestivo• La Cavidad
Abdominal
Next, the dissection moves into the abdominal cavity. In this photo, the spleen is being pushed up for best viewing. Superior to the spleen is the liver, one of the largest organs in the abdominal cavity, and under the lower, right edge of the liver, you can see the curve of the stomach
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Hígado
• Here, the liver has been removed from the abdominal cavity. The
anterior two lobes are easily visible in the photo
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The IntestinesThe small intestine
• The small intestine has been
removed as a bunch. You can
see the convolutions of this part of the digestive tract.
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The Intestines (continued)The Large Intestine and
Mesentery
• The large intestine is shorter than the small intestine, but it is two to three times larger
in circumference.
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The mesentery attaches the intestines to the abdominal wall and helps them maintain
their convoluted shape.
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Corazón y Sist. Circulatorio
• The pig heart is
located in the center
of the thoracic cavity.
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• This heart has been removed
from the thoracic cavity of the pig.
It is still wrapped in the
pericardium, a fibrous layer of
connective tissue that surrounds and protects the heart.
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Now, the pericardium has been removed. It is very easy to see the auricles covering the left and right atria of the heart. You can also see the outer
portion of the atrium ventricular septum which
separates the left and right sides of the heart.
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Aorta
Arteria pulmonar
Vena cava
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when removed this organ is bean or peanut shaped. It is responsible for
filtering the pig's blood.
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