What is the function of the masseter in a fetal pig?
One of the four main muscles used in mastication (chewing), the Masseter supports the arterial structures that move blood through the muscles of the jaw. It also causes the elevation of the mandible allowing for a more powerful biting movement.
Why is it relatively easy to cut through the ribs of the fetal pig?
For these reasons, they are relatively inexpensive and easy to obtain. Fetal pigs have cartilaginous bones that have yet to harden, so they are not difficult to cut into. Most of the internal structures can easily be seen without the aid of a microscope or magnifying glass.
Why can you not use the fetal pig to study their bones?
Use in biology labs There are several reasons for this, the main reason being that pigs, like humans, are mammals. Fourthly, fetal pigs are easy to dissect because of their soft tissue and incompletely developed bones that are still made of cartilage.
What structure cleans toxins out of the body in a fetal pig?
The kidneys are the organs in the body that filter out toxic and other waste materials from the bloodstream and maintain the body’s fluid balance (Fig. 1-10). Blood passes from the aorta into the kidney where it is filtered and returned back into the blood stream.
Where is the masseter muscle located and what is its function pig?
This runs laterally across the midline of the ventral side of the jaw. Where is the masseter located and what is its purpose? It is located ventral and lateral to the mandible. This muscle elevates and protrudes the mandible, facilitating chewing or grinding food.
What does masseter muscle do?
The masseter muscle is one of the four muscles responsible for the action of mastication (chewing). When the masseter contracts it causes powerful elevation of the mandible causing the mouth to close.
Why do are we using the fetal pig to study human anatomy?
A fetal pig dissection is helpful for anatomy studies because the size of the organs makes them easy to find and identify. It is also interesting to do because a lot of the internal anatomy is similar to humans!
Do humans and fetal pigs have the same muscles?
Muscles. In almost every case, fetal pigs have the same muscles as humans, with some small variations in the size and location of some muscles related to the fact that pigs are quadrupedal and humans are bipedal. For example, the major chest and abdominal muscles found in humans are present in the pig.
What are the differences between the hind limbs of the pig and your own toes?
How do human feet differ from pig feet? The big toe is absent in pigs, in both forelimbs and hindlimbs. They walk on their toes, hoofed third and fourth toes, producing digitigrade locomotion. Humans use the entire foot structure to walk on and produce plantigrade lcoomotion.
Why do pigs pee blood?
The disease is caused by various bacteria that, under normal circumstances, live harmlessly in the pig’s urinary tract, below the bladder. The bacteria also reside in the preputial sheath of the boar and sows are further infected during mating. The most common cause of the disease is poor hygiene.
Which body part of the fetal pig is protected by a special covering that protect the mother’s body?
Thin membrane clinging the skin protects the fetal pig while in the mother’s womb. Contains 2 umbilical arteries and 1 umbilical vein. Largest internal organ. Dark brown in color and fills the entire upper area of the abdominal cavity.
Where is the masseter muscle found in the fetal pig?
6. Finally, the masseter is a large muscle found anteroventral to the parotid gland at the angle of the jaw. This is a cheek muscle that originates on the zygomatic bone and inserts on the posterolateral surface of the mandible, elevating it. The chest muscles in the fetal pig are similar to those found in humans.