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Respiratory and Digestion Practical
N/A
101
Anatomy
Undergraduate 3
04/01/2012

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Term
Respiratory System
Definition
Supplies the body with oxygen and dispose of carbon dioxide.
Term
Pulmonary Ventilation
Definition
the tide-like movement of air into and out of the lungs so that gases are continuously changed and refreshed. also called ventilation of breathing.
Term
External Respiration
Definition
the gas exchange between the blood and the air-filled chambers of the lungs (oxygen loading/carbon unloading)
Term
Internal Respiration
Definition
exchange of gases between systemic blood and tissue cells
Term
Transport of Respiratory Gases
Definition
transport of respiratory gases between the lungs and tissue of cells of the body, using blood as transport vehicle.
Term
Conchea
Definition
inf, sup, and middle lobe-like structures that increase air turbulence
Term
Sinuses
Definition
act as resonance chambers during speech; also use mucus to warm and moisten air
Term
palates
Definition
separates oral cavities from nasal passages;
Term
Septum
Definition
divides the nasal cavity
Term
Tonsils
Definition
masses of lymphoid tissue that help protect the respiratory system
Term
apertures
Definition
connects nasopharynx to the nasal cavity
Term
otitis media
Definition
middle ear infection
Term
cleft palate
Definition
genetic defect that causes difficulty in breathing and oral cavity functions like sucking, mastication, and speech.
Term
oropharynx
Definition
continuous post with the oral cavity from soft palate to the epiglottis; common for air and food;
Term
auditory or pharyngotympanic-Eustachian Tuve
Definition
allow middle ear pressure to become equalized to the atmospheric pressure,
Term
thyroid cartilage
Definition
large shield shaped on ant. surface of larynx; prominence known as Adam's apple;
Term
cricoid cartilage
Definition
located in inferior larynx; ring-shaped
Term
epiglottis
Definition
flexible elastic cartilage on superior opening of larynx; only non-hyaline cartilage. "guardian of the airways" forms lid over larynx when we swollow
Term
cough reflex
Definition
attempts to expel and object other than air that enters the larynx; only works when conscious
Term
vestibular folds
Definition
false vocal cords; upper folds in larynx
Term
vocal folds
Definition
true vocal cords that vibrate to expel air for speech
Term
arytenoid cartilage
Definition
triangular cartilage that the vocal cords are attached to by the vocal ligaments
Term
glottis
Definition
slit like passage way between folds in larynx
Term
4 parts of respiration
Definition
pulmonary ventilation, external respiration, transport of gases, and Internal respiration
Term
# of cartilages in larynx
Definition
9
Term
length of trachea (windpipe)
Definition
11 cm or 4 inches; from larynx to sternal angle (disc between 4th and 5th vertebrae)
Term
division of trachea
Definition
Main (primary) bronchi, lobar (secondary, and segmental (tertiary)
Term
hilum
Definition
where left and right bronchi join lung
Term
bronchioles
Definition
branch off of the tertiary bronchioles; terminal end called respiratory bronchioles
Term
respiratory tree
Definition
called this because of continual branching of the passageways in the lungs
Term
lobes or right vs left
Definition
2 in left 3 in right
Term
cilia and mucus in lungs
Definition
cilia propel mucous containing dust particles, bacteria, and other debris away from lungs towards throat so it can be expelled or swollowed
Term
c shaped trachea?
Definition
allow esophagus to expand when swollowing food;
Term
cartilage vs smooth muscle going down tubes
Definition
As you move further down the tubes, the cartilage disappears and smooth muscle is more prominent
Term
alveolar ducts
Definition
come from divided respiratory bronchioles and terminate into sacs
Term
alveolar sacs
Definition
come from alveolar ducts and look like grapes;
Term
alveoli
Definition
tiny balloon-like expansions along the alveolar sacs; are compsed of single layer of thin sqamous epithelium over a wispy basal lamina;
Term
respiratory membrane
Definition
air-blood barrier; alveolar and capillary walls along with basal laminae. where gas exchange occurs.
Term
respiratory zone structures
Definition
alveolar sacs, ducts, and respiratory bronchioles; called this because this is where respiration happens; aka anatomical dead space
Term
mediastinum
Definition
part of thoracic cavity that houses the heart;
Term
root of lungs
Definition
attaches lungs to mediastinum; contains its vascular and bronchial attachments
Term
elastin
Definition
in lungs to help squeeze out air
Term
pleural membranes
Definition
double layered serous membrane around the lungs
Term
pleural cavity
Definition
potential space; between plural membranes
Term
pleurisy
Definition
the ability for the organs to move without rubbing because of seruos fluid
Term
conductive zone structures
Definition
all other parts of the respiratory system from the nasal cavity to terminal bronchioles; called this because they simply transport gas, no exchange happens
Term
apex of lungs
Definition
top of lungs that lies just deep to the clavicle
Term
base of lungs
Definition
inferior concave surface that rests of diaphragm.
Term
two phases of breathing
Definition
inspiration and expiration
Term
spirometer
Definition
device tat measures respiratory volumes; there is a hand held dry or Phipps and Bird wet ;
Term
breathes per minute
Definition
12 per minute; 500ml of air per breath
Term
tidal volume
Definition
amount of air inhaled or exhaled with each breath under resting conditions (500ml)
Term
minute respiratory volume
Definition
= TV x respirations/min
Term
expiratory reserve volume (ERV)
Definition
amount of air that can be forcefully exhaled after a normal tidal volume inhilation (1200ml)
Term
vital capacity
Definition
maximum amount of air that can be exhaled after a maximal inspiration (4800ml) ; (4310 for my age and height)
VC= TV + IRV + ERV
Term
inspiratory reserve volume (IRV)
Definition
amount of air that can be forcefully inhales after a normal tidal volume inhalation (3100ml)
Term
estimated dead air space
Definition
about 150 ml; air that is inhaled but never exchanged
Term
residual volume
Definition
1.0L; the amount of gas remaining in the lung at the end of a maximal exhalation.
Term
acid-base balance of blood
Definition
H20 + CO2 <-> H2CO3 <-> H+ + HCO3-
Term
explain the blowing into the solution thing
Definition
phenol red in solution of potassium hydroxide;
Term
4 tunics of the alimentary canal
Definition
mucosa, submucosa, muscularis externa, and serosa or adventitia
Term
mucosa
Definition
wet lining that lines the lumen; consists of surface epithelium, lamina propria, and muscularis mucosae; secrets enzymes, mucus, hormones, etc.
Term
submucosa
Definition
dense CT containing blood and lymph, scattered lyphoid follicles, and nerves. nutrition and protection; has submucosal plexus
Term
muscularis externa
Definition
bilayer of smooth muscle; inner circular and outer longitudinal; has myenteric plexus
Term
serosa or adventitia
Definition
outermost covering of alimentary canal; also visceral peritoneum; mesothelium with thin layer of areolar CT; adventitia replaces this layer outside the abdominopelvic cavity.
Term
3 pharynx
Definition
naso, oro, and laryngo
Term
constrictor muscles
Definition
muscles that are on the outer layer of pharynx and are circular; initiate peristalsis
Term
esophagus
Definition
aka gullet; 25cm; no digestive or absorptive reason, only movement;
Term
gastrophageal sphincter
Definition
smooth muscle at esophagus-stomach junction; controls food passing into stomach
Term
GERD
Definition
gastroesophogeal reflux disease; chronic digestive disease that occurs when stomach acid or, occasionally, bile flows back (refluxes) into your food pipe (esophagus)
Term
small intestine
Definition
convoluted tube 6 to 7 meters long (20ft) in cadaver but only 2 meters long in a living person because of muscle tone;
Term
duodenum
Definition
extends from pyloric sphincter for 25cm; most of this lies in the retroperitoneal position
Term
jejunum
Definition
extends 2.5 meters past duodenum; mostly in the umbilical region of ab cavity
Term
ileum
Definition
terminal end of S.I. 3.6 m longs and joins L.I. and ileocecal valve
Term
large intestine
Definition
1.5m long; extends from ileocecal valve to the anus;
Term
mesocolon
Definition
attaches the transverse colon to the posterior body wall.
Term
tenae coli
Definition
the 3 longitudinal muscles in the L.I. ; they are shorter than the rest of the L.I. so they cause haustra
Term
haustra pouches
Definition
small pocketlike sacs in L.I. caused by tenae coli
Term
epiploic appendages
Definition
fat-filled pouches of visceral peritoneum that hang from the colon's surface
Term
major purpose of large intestine
Definition
consolidate and propel the unusable fecal matter towards the anus and eliminate it from the body;
Term
diarrhea
Definition
watery stools; results from anything that rushes undigested food residue through the large intestine before it can absorb the water
Term
constipation
Definition
when food remains in L.I. for a long time and excess water is absorbed and the stool becomes hard and difficult to pass
Term
3 of permanent vs primary teeth
Definition
20 and 32
Term
dental formula
Definition
describes dentition; # of upper teeth and lower teeth times 2
Term
enamel
Definition
hardest part of tooth and body; 95-97% inorganic calcium salts;
Term
gomphosis joint
Definition
type of joint in a tooth
Term
pulp
Definition
CT liberally supplied with blood vessels, nerves, and lymphatics occupies the cavity
Term
pulp cavity
Definition
cavity that occupies the central portion of tooth and is filled with pulp
Term
odontoblast cells
Definition
specialized cells that reside in the out margins of the pulp cavity and produce dentin;
Term
3 pairs of salivary glands
Definition
parotid, submandibular, and sublingual
Term
cranial nerve that controls glands
Definition
vagus
Term
hepatitis/cerrhosis
Definition
inflammation of the liver/ hardening of liver
Term
liver lobules
Definition
structural and functioning units of the liver
Term
hepatocytes
Definition
liver cells that make up liver lobules; makes bile
Term
portal traids
Definition
made up of a portal arteriole, a portal venule, and a bile duct
Term
kupffer cells
Definition
special phagocytic cells that like the sinusoids and remove debris such as bacteria from blood as it flows by
Term
bile canaliculi
Definition
tiny canals that bile flows through which run between adjacent cells toward the bile eventually leaves the liver
Term
pancreas
Definition
produces hormones (endocrine) and produces enzymes (exocrine)
Term
buffers here
Definition
Bicarbonate neutralizes acidic chyme
Term
surfactant
Definition
in the plueral cavity to decrease surface tension
Term
clara cells
Definition
release surfactant
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