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CG Bio105 Exam5
Lecture Notes
90
Biology
Undergraduate 2
12/12/2011

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Term
Name the 3 characteristics of the nasopharynx?
Definition
1. posterior to nasal cavity
2. pharyngeal tonsil to posterior wall
3. Auditory tubes open into masopharynx to equalize air pressure in the middle ear
Term
Name the 4 characteristics of the oropharynex?
Definition
1. posterior to oral cavity
2. paired palatine tonsils to lateral walls.
3. lingual tonsils on base of tongue
4. extends between soft palate & hyoid bone
Term
Name the 1 characteristic of the laryngopharynx
Definition
extends from the hyoid to the beginning of the esophagus (posterior to cricoid cartilage)
Term
Define vocal cords
Definition
vocal ligaments covered by a mucous membrane:
true: produce sound when air passes through them
false: protect vocal cords - no sound
Term
How does oxygen get into the blood?
Definition
diffusion
Term
how many layers of cells does gas/blood exchange and name the layers?
Definition
2 layers = alveolar sac & pulmonary capillary beds
Term
Describe the anatomic description of the larynx?
Definition
Also called the voice box, connects pharynx and trachea
composed of cartilage, skeletal muscles, and ligaments
Term
What is the epithelium lining superior to the vocal cords?
Definition
nonkeratinized stratified squamous
Term
What is the epithelium lining inferior to the vocal cords?
Definition
pseudostratified ciliated columnar
Term
What are the 3 functions of the Larynx?
Definition
1. prevents food and drink from entering trachea
2. conducts air
3. produces sound
Term
Describe the anatomic description of the trachea?
Definition
1. flexible
2. connects larynx to primary bonchi
Term
Describe the wall composition of the Trachea?
Definition
C-shaped cartilage rings
Term
What type of epithelium is in the Trachea?
Definition
pseudostratified ciliated columnar
Term
What are the Trachea's 2 functions?
Definition
1. conditions inhaled air on it's way to lungs (warms it)
2. conducts air
Term
Describe the anatomic structure of the Bronchi?
Definition
1. largest airways of the bronchial tree
2. consist of primary, secondary, tertiary, and smaller bronchi
Term
Describe the wall composition of the Bronchi?
Definition
incomplete rings and irregular plates of cartilage - smooth muscle
Term
What type of Epith Lining is in the Bronchi?
Definition
Larger Line = pseudostratified ciliated columnar
Smaller Lining = simple columnar
Term
Function of Bronchi
Definition
conduct air
Term
What is the anatomic descrip of bronchioles?
Definition
smaller conduction airways of the bronchial tree
Term
Describe the wall compo of bronchioles?
Definition
no cartilage - large amounts of smooth muscle
Term
What is the epith lining of the bronchioles?
Definition
1. larger - simple columnar
2. smaller - simple cuboidal
Term
Function of bronchioles?
Definition
conduct air
Term
Describe the anatomic descrip of the respiratory bronchioles?
Definition
smallest conducting airways
Term
describe wall compo of respiratory bronchioles?
Definition
no cartilage, smooth muscle
Term
what is the epith lining of the respiratory bronchioles?
Definition
simple cuboidal
Term
Function of respiratory bronchioles
Definition
gas exchange
Term
Anatomic Descrip of Alveolar Ducts?
Definition
tiny airways that branch off respiratory bronchioles
Term
wall compo of alveolar ducts
Definition
no cart, smooth muscle
Term
Epith lining of Alveolar Ducts?
Definition
simple squamous epithelium
Term
Function of Alveolar ducts?
Definition
transport air to alveoli
Term
anatomic descrip of Alveoli?
Definition
tiny microscopic air sacs
Term
Wall compo of Alveoli?
Definition
no cartilage or smooth muscle
Term
Epith lining of Alveili?
Definition
simple squamous epithelium
Term
function of the alveoli
Definition
site of gas exchange, unit of respiration
Term
What shape are the lungs?
Definition
conical & it's base rest upon the muscular diaphragm.
Term
What are the lungs supported by?
Definition
rib cage
Term
What separates the lungs?
Definition
mediastinum
Term
define costal surface of the lung?
Definition
broad, rounded surface and is in contact w/ the thoracic wall.
Term
Define Pleura and name epithelium?
Definition
outer surface of each lung and the adjacent internal thoracic walls lining = simple squamous
Term
Define visceral pleura?
Definition
tightly covers the outer surface of each lung
Term
Define parietal pleura?
Definition
line the mediastinum and the superior surface of the diaphragm
Term
What is the function of the pleural membrane?
Definition
produce a thin, serous fluid that circulates in the pleural cavity and acts as a lubricant ensuring minimal friction during breathing.
Term
Where are the lymph nodes located?
Definition
within the connective tissue of the lung as well as around the bronchi and pleura.
Term
What is the function of the lymph nodes in the lungs?
Definition
collect carbon, dust particles, and pollutants that were not filtered by the pseudostratified ciliated columnar.
Term
What is the function of elevation while breathing?
Definition
ribs increases the lateral dimension of the thoracic cavity.
Term
What is the function of depression while breathing?
Definition
ribs decreases the lateral dimensions of the thoracic cavity.
Term
What is the function of the scalenes?
Definition
increase thoracic cavity dimensions by elevating the first and second ribs during forced inhalation.
Term
When are the intercostals depressed?
Definition
during force exhalation
Term
Does normal exhalation require muscular effort?
Definition
NO
Term
What is the function of the transversus thoracis?
Definition
extends across the inner surface of the thoracic cage and attaches to ribs 2-6 - helps depress ribs.
Term
What is controlled by the autonomic nervous system?
Definition
the trachea, bronchial tree, and lungs.
Term
What is the function of the brainstem of the respiratory system?
Definition
controls the involuntary rhythmic activities activities that deliver and remove respiratory gases.
Term
Where are the regulatory respiratory centers located?
Definition
Within the reticular formation, through both the medulla oblongata, and pons.
Term
What is located in the Respiratory Rhythmicity Center?
Definition
Ventral & Dorsal Respiratory Group
Term
What is emphysema?
Definition
loses sacs in alveoli; much less surface area.
Term
What are the 3 effects does aging have on the respiratory system?
Definition
1. less efficient due to structural changes
2. decrease elastic connective tissue
3. loss of elasticity reduces gas exchanged which will decrease the ventilation rate.
Term
What 2 systems carry waste?
Definition
Cardiovascular & Lymphatic systems carries these wastes
Term
What is the function of the kidneys filter?
Definition
Waste products from the bloodstream and convert the filtrate into urine.
Term
What makes up the urinary tract and what is their function?
Definition
ureters, urinary bladder, and urethra. They transport the urine out of the body.
Term
What are the 6 functions of the urinary system and name 3 other systems it works with?
Definition
1. remove waste from bloodstream
2. storage of urine (expands to 1 liter)
3. Excretion of urine - urethra
4. Cardio System = blood volume regulation/Blood Pressure
5. Skeletal SYSTEM=regulation of erythrocyte production
6. ENDO System = regulate oxygen level
Term
Location of Kidneys
Definition
Posterior abdominal wall, lower thoracic, upper lumbar region
Term
Location of ureters?
Definition
extends from kidneys to bladder
Term
Location of urinary bladder
Definition
pelvic cavity, posterior to pubic symphysis
Term
Urethra
Definition
inferior to neck of urinary bladder
Term
description of kidneys
Definition
paired, bean-shaped organs, contain outer cortex and inner medulla
Term
description of ureters
Definition
paired thin muscular tubes composed of inner mucosa
Term
description of urinary bladder
Definition
muscular ditensible sac composed of inner mucosa; contains the internal urethral sphincter
Term
description of urethra
Definition
single muscular tube, surrounded by voluntary external urethral sphincter. shorter in females by 15 cm
Term
what is the epthil lining in the urethra
Definition
transitional to pseudostratified columnar to stratifed squamous
Term
what is the % of blood that travels through the renal arteries into renal sinus?
Definition
20-25%
Term
What happens once the blood plasma is filtered?
Definition
it leaves the glomerulus and enters an efferent arteriole
Term
Is the blood in the efferent arteriole oxygenated or non oxygenated and why?
Definition
oxygenated; the gas and nutrient exchange w/ the kidney tissues has not yet occurred.
Term
What capillary networks are responsible for the actual exchange of gases and nutrients?
Definition
peritubular capillaries & vasa recta
Term
define peritubular capillaries
Definition
primarily in the cortex of the kidney and connected to the efferent arterioles
Term
define the vasa recta
Definition
surround the thin tubes that project into the medulla and part of the efferent arteriole network.
Term
description of renal corpuscle & what type of epith lining is located here?
Definition
capillary ball or tuft covered by podocytes and surrounded by simple squamous
Term
description of proximal convoluted tubule & epith lining?
Definition
simple cuboidal and has a prominent brush border
Term
Epith lining nephron loop?
Definition
thin limbs = simple squamous epith
thick limbs = simple squamous or cuboidal epith
Term
epith lining distal tubule
Definition
simple cuboidal w/ a brush border
Term
what is the function of the renal corpuscle?
Definition
produces a filtrate of blood that must be modified through the nephron tubules
Term
what is the function of the proximal tubule?
Definition
reabsorbs electrolytes, nutrients, plasma proteins, vitamins, and water
Term
what is the function of the nephron loop?
Definition
reabsorbs approx 15-20% of excess water in tubular fluid
Term
what is the function of the distal tubule?
Definition
secretes hydrogen H+ and potassium K+ ions into tubular fluid; reabsorbs sodium Na+ ions and water from tubular fluid
Term
what are the 3 steps of filtration in the urine production?
Definition
1. water, ions, and small molecules are forced out of the blood
2. the portion entering the nephron is called the filtrate.
3. filtration pressure: pressure difference between the glomerular capillaries and bowmans capsule.
Term
What is Rx?
Definition
to Take
Term
What is sig?
Definition
write on label
Term
What hormone is released to check the O2 levels in the blood and goes to skeleton to make more O2.
Definition
erythropoietin
Term
what is retroperitoneal?
Definition
the kidney are located behind the peritoneum
Term
Know 1 way the following systems react w/ another system:
Respiratory
Urinary
Digestive
Male and Female Repo
Definition
LOOK UP!
Term
What is stuffed into pyramids of the kidney?
Definition
NEPHRONS
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