Controls passive from the esophagus into the stomach.
Simply because it is closer to the heart. Cardiac refers to the heart.
There is a very good reason there is no food found in a fetal pig's stomach. The fetal pig was never born.
Fetal pigs are not as developed as an adult.
The trachea, heart, lungs, bronchial tubes, thyroid gland, and the larynx are found in the cavity of a fetal pig.
The main purpose of the sphincter is to control or limit a passage way to one direction. There are two main sphincters in pigs, the cardiac sphincter that controls the passageway from the esophagus into the stomach. And the pyloric sphincter that controls the passageway into the duodenum.
Meconium
The pyloric sphincter in a fetal pig is a muscular valve located at the junction between the stomach and the small intestine, specifically the duodenum. Its primary function is to regulate the passage of partially digested food (chyme) from the stomach into the small intestine, ensuring that it only enters when the intestine is ready to process it. This mechanism is crucial for efficient digestion and absorption of nutrients. The pyloric sphincter helps maintain proper digestive flow and prevents backflow from the intestine into the stomach.
the rostrum is the snout of a fetal pig
No. All contain cardiac tissue after the circulatory system has developed, but no more proportionally than any other human or pig.
The epididymis in a fetal pig is responsible for producing sperm. It is located on one testicle in the fetal pig.
The inner wall of the stomach of the fetal pig is lined with gastric mucosa, which contains gastric pits leading to gastric glands. These gastric glands secrete enzymes and mucus that aid in digestion. The lining also has rugae, which are folds that allow for expansion of the stomach.
A fetal pig is an unborn pig used in schools for dissection. Therefore, a fetal pig doesn't have a life span, because they never actually lived.