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Fetal Pig Dissection Pre-Lab
yay freshman bio
What are unborn pigs called?
What is meant by gestation period?
length of conception to birth
How is their age (length of gestation) determined?
by measuring length of the fetal pig
How long does full gestation take?
What is the pig's kingdom?
What is the pig's phylum?
What is the pig's class?
What is the pig's order?
What is the pig's family?
What is the pig's genus?
What is the pig's species?
What type of external features are used to separate mammals into orders?
-method of movement
Name the two external characteristics which distinguish mammals from other mammals?
-hair during development
-females have mammary glands with openings to nourish their young
Approximately how many piglets does a sow have in a litter?
pertaining to the head
toward the nose
pertaining to the tail
toward the backbone
toward the belly
toward the side
toward the midline
nearest the reference point
farthest from the reference area
Is a pig a biped or quadruped? Explain
quadruped; 4 legs
Is the pig digitigrade, unguligrade, or plantigrade? Explain
unguligrade; it walks on the tips of its toes
Are pigs herbivores, carnivores, or omnivores? Explain
omnivores; they eat everything
What goes in and out of the external nares?
moist and warm air
What is another word for pinna? What is its function?
auricle; it catches noises for the eardrum
What is the function of the pig's vibrissae? Explain
it is a sensory facilitator; it helps mammals feel their way around in the dark
What is the function of the pig's nictitating membrane? Explain
It is a third eyelid, it is a vestigial organ that ancestors used to protect/moisten the eye
What is another name for the chest region of the pig?
What is another name for the "belly" region of the pig?
Why is the fetal pig a good specimen to dissect?
it has similar anatomy to the human
Tissue that makes up skin?
List the major organs in the thoracic cavity
trachea, heart, lungs, bronchial tubes, thyroid gland, larynx
List the major organs in the abdominal cavity
liver, stomach, spleen, intestine, kidney, gall bladder, urinary bladder
What is the function of the umbilical cord?
to give fetal pig nourishment
What two cavities does the diaphragm separate?
thoracic and abdominal