Respiratory and Digestive Systems Flashcards
nostrils

external nares
the internal region of the nose lined with ciliated mucus-secreting cells

nasal cavity
partition between nasal cavities; compsed of the ethmoid bone, perpendicualr plate, the vomer, and catailadge

nasal septum
ethmoid bones lined with mucosa, specialized to filter, warm, and moisten inspired air

turbinate bones
grooves between conchae for causing turbulence of incoming air

meatus
funnel-like passageway between the nasal cavity and nasopharynx
choanae (internal nares)
region that joins the nasal and oral cavities to the larynx and esophagus

pharynx
upper portion of the pharynx that begins at the choanae and ends at the hard palate

nasopharynx
lymaphatic tissue knnow as adenoids located in the posterior wall of the nasopharynx

pharyngeal tonsil
part of the pharynx lined with stratified squamous epithelium that begins at the uvula and ends at the level of the hyoid bone

oropharynx
posterior portion of the roof of the mouth lacking bone

soft palate
posterior extension extension of the soft palate, elevates during swalloing to prevent food from entering the nasal cavity

uvula
paired lymph nodes postitioned in the back of the throat

palatine tonsils
located posteriorly on the surface of the tounge

lingual tonsils
most inferior portion of the pharynx that continues from the level of the hyiod bone to the inferior border of the cricoid cartilage, posterior to the larynx

laryngopharynx
contiues with the trachea inferiorly, prevents food from entering the lungs, also produces sound

larynx
largest and most anterior cartilage of larynx, does not wrap around the trachea, only the anterior aspect.

thyroid cartilage
(adams apple)
extends around the entire trachea, is small anteriorly and large posteriorly, connects thyroid cartilage to trachea inferiory

cricoid cartilage
(Mullet Cartlilage
cartilage located superior to cricoid and posterior to thyroid cartlilages, for attachment of vocal cords

arytenoid cartilage
(pinchers)
closes glottis upon swallowing to prevent food from entering respiratory tract

epiglottis
structure of the larynx composed of the vocal folds and space between them
glottis
pair of mucosal folds extending across upper opening of larynx from thyroid to arytenoid cartilages, vibrate to produce sound

vocal folds
(true vocal cords)
truth is deep
pair of horizontal mucosal folds superior to vocal folds; play no part in sound production

vestibular folds
(false vocal cords)
a large tube descending from the larynx, lined with ciliated psuedostratified columnar epithelim, contaning several cartilagenous rings

trachea
internal ridge formed by last tracheal cartilage marking the division of trachea into bronchi; associated with the cough reflex

carina
series of branches that gradually get smaller from the trachea to the aveolar ducts

bronchial tree
first branch after the tracheal bifurcation
primary bronchi
second division, 3 on the right, 2 on the left; for each lobe of the lungs
secondary bronchi
third division; there may be up to 20 more divisions before reaching the bronchioles
tertiary bronchi
consists of superior, middle, and inferior lobes

right lung
consists of superior and inferior lobes

left lung
depression on the left lung’s medial border that accomadates the heart

cardiac notch
serous membrane intimatly associated with the outer surface of the lung

viseral pleura
serous membrane that lines the thoracic wall, the mediastium and the superior portion of the diaphragm

parietal pleura
moistened slit-like space between visceral and parietal pleurea, reduces friction, prevents adhesion

pleural cavity
dome-shaped muscle superior to the liver, moves inferiorly when contracted thereby increasing the thoracic volume for inspiration

diaphragm
paired nerve that innervates the diaphragm on each side to control rate of breathing

phrenic nerve
contraction elevates the ribs, increasing the capacity during insperation

external intercostal muscles
aid in insperation and also forced expiration

internal intercostal muscles
the mouth; mucosa-lined enterance to the digestive tract consisting of the following; cheeks, hard palate, platal rugae, labia, labila frenulum, oral vestibule.

oral cavity
lined with statified squamous epthetium contain the buccinator muscle
cheeks
the anterior superior portion of the oral cavity comprised of the platine process of the maxilla bone, and horizontal plates of the palatine bones

hard palate
irregular surface of the anterior hard palate

palatal rugae
lips, red fleshy area at the enterance of the to the mouth

labia
a mucous membrane that attaches the lips to the gum both superiorly and inferiorly
labial frenulum
the space between the lips or cheeks and the gums

oral vestibule
full set consists of 32 indvidualized structures

teeth
4 upper, 4 lower anterior teeth eaching having a single root, cutters

incisors
2 upper, 2 lower teeth each having a single root, used to pierce and tear food

canines
4 upper and 4 lower bicuspids each with roots, used for grinding food

premolars (bicuspids)
6 upper and 6 lower teeth, the last of which are called wisdom teeth, two to three roots, and four or five cusps, best teeth for grinding

molars
irregular chewing surface on molars and premolars that fit into valleys of the opposite molars for crushing food

cusp
anchors the tooth by embedding in the alveoli of the mandible

root
sockets lined with connective tissue in which teeth are fastened

aveoli
the hardest substance found in the body, located on the outermost portion of the tooth

enamel
layer beneath the enamel of a tooth. comprises most of the mass of the tooth, between bone and enamel in terms of hardness

dentin
innermost portion of the tooth that contains blood vessles and nerves

pulp
gums, surrounds the alveolar processes, continous with peridontal ligament, anchors the tooth in the socket

gingiva
tubuloarveolar stuctures which secrete saliva for digesting starches and lubrication oropharynx with mucus to enhance swallowing
salivary glands
largest of these glands, located inferior and anterior to the external ear beneath the skin, becomes swollen following infestation with mumps virus

parotoid salivary glands
(sounds like parrot and it sits on your shoulder)
this gland lies inferomedial to the body of the madible

submandibular salivary gland
lies inferior to the tounge and anterior to the submandibular gland

sublingual salivary gland
serous membrane covering the organs of the abdominal cavity, largest serous membrane in the body

visceral peritoneum
serous membrane that lines the abdomial and pelvic cavities

parietal peritoneum
the space bewteen the visceral and parietal peritoneal membranes

peritoneal cavity
the fan shaped fold of peritoneum that suspends most of the small intestine from the internal surface of the posterior abdominal wall

mesentary proper
extends from the inferior surface of the liver and attaches to the lesser curvature of the stomach where it then runs continous with the stomachs visceral peritoneum

lesser omentum
mesentary which anchors the greater curvature of the stomach to the posterior abdominal wall, drapes over most of the abdominal organs

greater omentum
upper portion of the GI and respiratory tracts where food enters the esophagus

pharynx
a collapsed tube (when empty) located posterior to the trachea, emties into the stomach

esophagus
circualar muscle at the junction of the esophagus and the stomach

cardiac sphincter
the most distended part of the GI tract; stores food and converts it to chyme which is emptied into the small intestine

stomach
region of the stomach attached to the esophagus

cardiac region
the most superior portion of the stomach, touches the diaphragm

fundus
the major portion of the stomach, inferior to the fundus

body
the left convex margin of the stomach

greater curvature
the right concave margin of the stomach

lesser curvature
viasable folds on the inner stomach which allows the walls to streTCH

gastric rugae
the teminal portion of the stomach, leads to the duodenum.

pyloric region
a citcular muscle the controls transport of chyme from the stomach the the small intestine

pyloric sphincter
longest part of the GI tract, located between the pyloric sphincter and the ilieocecal valve of the large intestine, responsible for digestions and absorbtion of food

small intestine
macroscopic folds in the small intestine which increase surface area to enhance nutrient absorbion

plicae circulares
(ballarinas do pleas and they do them in a circular motion)
the c-shaped superior portion of the small intestine that recives bile from gallbladder and digestive enzymes from pancreas; 12 inches

duodenum
(when pinned, they will always pin it so that you can see the pyloric sphincter
the middle portion of the small intestine characterized by a relitively larger lumen and increased number of plicae circulares; 8 feet

jejunm
(when pinned, wont be able to see the pyloric sphincter or the cecal spincter)
terminal portion of the small intestine, contain numerous lymphatics in the walls; 12 feet

ileum
(when pinned, will be able to see the cecal sphincer)
a sphincter located on the terminal end of the ileum that prohibits backflow of chyme into the small intestine

ileocecal valve
from ileocecal valve to the anal canal, this part of the GI tract absorbs water and elctrolytes from the chyme and forms and expels feces

large intestine
an enlargement of the large intestine on the right lower abdomen near the iliocecal valve

cecum
a worm-like appendage on the cecum that countains lymphatic tissure

appendix
a shiny band of longitudinal muscle along the entire length of the large intestine for movement of feces

teniae coli
(tenga poop)
bulges in the wall of the large intestine cause by contractions of teniae coli
haustra
(house of poop)
fat accumulations on visceral peritoneum of large intestine

epiploic appendages
portion of the colon along the right side of the abdomen from the secum to the level of the kidney

ascending colon
curvature of the colon of the right side of the abdomen near the liver

hepatic flexure
middle portion of the colon where it crosses the upper abdominal cavity

transverse colon
opposite the hepatic flexure, the left curvature of the colon near the speen

splenic flexure
the portion of the colon which descends on the left side of the abdominal wall

descending colon
the s-shaped bend at the terminal end of the colon

sigmoid colon
terminal inch of the large intestine following the rectum

anal canal
located within the walls of the anal canal, involuntary smooth muscle

internal anal sphincter
located outside the anal canal, composed of voluntary skelatal muscle

external anal sphincter
external opening of the anal canal

anus
6 inch portion of the GI tract following the sigmoid colon, strong muscular contractions expel the feces

rectum
a large organ located in the upper abdomen, inferior to the diaphragm, stores glycogen, detoxifies the blood and synthasizes bile

liver
the largest lobe and the right side

right lobe
intermediate size, on the left side

left lobe
small lobe of the liver, part of the right lobe, located next to the gallbladder

quadrate lobe
(square)
small lobe on the lover, part of the left lobe, located next to the gallbladder

caudate lobe
(tail)
a ligament that seperates the left anf right lobes of the liver and connects the liver to the diaphragm

falciform ligament
collects bile from the right side of the liver

right hepatic duct
collects bile from left side of liver

left hepatic duct
formed by the union of the right and left hepatic ducts; the duct through which bile from the liver moves to the cystic and common bile ducts

common hepatic duct
a muscular sac attached to the inferior aspect of the liver, stores and concentrates bile produced by the liver

gallbladder
a passage for bile from the gallbladder, meets with common hepatic duct to form the common bile duct

cystic duct
the duct formed by the union of the cystic duct and the common hepatic duct, conveys bile to the duodenum

common bile duct
lobulated organ the lies horizontal and inferior to the stomach; secretes digestive enzymes; insulin and glucagon

pancreas