M2 Part C Flashcards
Digestive System
tongue
organ for taste, aids with chewing, swallowing, and speech. contains papillae and taste buds.
teeth
hard appendages set in the jaw bone to assist in chewing. 2 sets in lifetime.
salivary glands
secrete saliva to moisten food and start digestion of sugars and carbohydrates
uvula
a small, fleshy mass of tissue at the back of the oral cavity, aids with sound
pharynx
muscular cavity referred to as the throat; air and food/liquids both pass through
epiglottis
thin cartilage that prevents food/liquids from entering the lungs, just behind the base of the tongue
esophagus
connects the pharynx to the stomach, smooth muscles contract by peristalsis to move food
stomach
muscular organ that assists digestion with acids and churning of food
duodenum
first part of the small intestine, connecting the stomach and the jejunum; both the shortest and widest part
jejunum
second part of the small intestine, between the duodenum and the ileum
ileum
last and longest part of the small intestine, connects the jejunum and the large intestine; narrowest segment
cecum
dilated pouch at the start of the large intestine; on the right side of the body near the appendix
appendix
a small tube extending from the cecum; thought to be part of the intestine’s internal immune system
ascending colon
beginning part of the large intestine between the cecum and transverse colon; on the right side of the body
transverse colon
second part of the large intestine, between the ascending and descending colon, running horizontally across the abdomen.
descending colon
third part of the large intestine, between the transverse and sigmoid colons, usually on the left side of the body. stores partially-digested food.
sigmoid colon
fourth part of the large intestine, connecting the descending colon and the rectum. stores feces.
rectum
last part of the large intestine, stores feces
anus
opening of the rectum on the body surface for expelling feces; controlled by 2 sphincters, circular muscles.
gallbladder
a muscular sac containing bile from the liver before it is dispensed into the duodenum
liver
a large, glandular organ that creates bile and processes certain substances in the blood.
pancreas
a large, elongated gland behind the stomach; secretes digestive enzymes into the duodenum and insulin/other hormones into the blood
gastritis
inflammation of the stomach
esophagitis
inflammation of the esophagus; can develop from GERD
gastroesophageal reflux disease
AKA GERD; backflow of stomach acid into the esophagus, causing heartburn
hiatal hernia
a protrusion of the top of the stomach through part of the diaphragm; may need surgical repair
pancreatitis
inflammation of the pancreas; severe pain, can be acute or chronic; related to gall stones, alcoholism, etc.