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Test 3
Urinary, endocrine, reproduction, fluids, hormones,
101
Anatomy
Undergraduate 2
04/23/2012

Additional Anatomy Flashcards

 


 

Cards

Term
What stimulates spermatogensis?
Definition

androgen-binding proteins and testosterone

 

Term
Where are Sertoli Cells located and what do they secrete?
Definition
Located in the seminiferous tubules (in the testes) and they secrete androgin-binding proteins (triggered by FSH)
Term
What do Cowper's glands do?
Definition
During sexual arousal, they secrete an alkaline fluid into the urethra that protect sperm
Term
Atresia
Definition
Most female eggs go through this degenerative process (they die off by adolescence)
Term
Primary Follicle
Definition
Primary oocyte surrounded by a single layer of flat follicular cells
Term

graafian (Mature) follicle

 

Definition

primary follicle -> secondary follicle -> graafian follicle

Primary oocyte completes meiosis I producing the first polar body and secondary oocyte in this follicle. The mature follicle will release the secondary oocyte eventually resulting in ovulation

Term
corpus luteum
Definition

what the mature follicle becomes after expelling the secondary oocyte

 

produced progesterone, estrogen, relaxin and inhibin until it becomes corpus albican

Term
What happens when a secondary oocyte is fertilized?
Definition
Meiosis II resumes, and the oocyte splits into an ovum (mature egg) and a second polar body
Term
Zygote
Definition
a diploid zygote is formed when the nuclei of a sperm cell and ovum unite
Term
What are teh steps in oogenesis?
Definition
start with oogonium; becomes primary oocyte; splits into first polar body and secondary oocyte; the secondary oocyte goes through ovulation; if it is fertilized, an ovum and second polar body are created; the ovum and sperm nuclei form a zygote
Term
What does FSH stimulate in females?
Definition
it stimulates the primary follicle to occur from a primary oocyte
Term
What is the function of inhibin and where is it excreted from?
Definition
secreted bu follicles and it inhibits FSH (because you only need one primary follicle at a time)
Term
What does LH (lutinizing hormone) do in females
Definition
stilulates the corpus luteum to release hormones (estrogen, progesterone, relaxin)
Term
corpus alvican
Definition
what the corpus luteum becomes after fertilization has not occured (stops secreting estrogen and progesterone etc)
Term

HCG

 

Definition

Human Chroionic Gonadatropin- zygote will immediately begin releasing this

 

stimulates corpus luteum to continue secreting estrogen and progesterone

 

function is to maintain the zygote and uterus for 8-9 weeks

Term
chorionic villi
Definition
doesn't allow mother and fetal blood to mix; tree-like structures that bring nutrients to the fetus
Term
2 Parts of JGA
Definition
Juxtaglomerular Cells (afferent arteriole) and Macula Densa (Loop of Henle)
Term

Juxtaglomuerular Cells

 

Definition

Releases renin into the blood

 

Term
Renin
Definition
activates angiotensinogen to turn into angiotensis I which will then target ACE to stimulate it to form angiotensin II
Term
angiotensin II
Definition

powerful vasoconstrictor

 

also stimulates the adrenal cortex to release Aldosterone (adresses LBP problems)

Term
Aldosterone
Definition
causes kidneys to retain water by attaching to principal cells in the Distal Convoluted tubules (DCT) triggering them to retain sodium which makes the water follow (Increases Blood Pressure)
Term
ADH
Definition

Antidiuretic Hormone- released from posterior pituitary gland in response to low blood pressure (stimulate aquapores to allow water to run through cells and out of the filtrate)

inhibitted by caffiene and alcohol

Term
ANP
Definition
Atrial Natriuretic Peptide- a response to high blood pressure by sending sodium out into the urine where water will follow
Term
Net Filtration Pressure
Definition

NFP=GBHP-CHP-BCOP

 

GBHP-Glomerular blood hydrostatic pressure (BP in glomerular capillaries)

CHP- Capsular Hydrostatic Pressure (pressure exerted against filtration membrane by fluid in the capsular space and renal tubule)

BCOP-Blood colloid osmotic pressure (due to presence of proteins)

Term
Myogenic Mechanism
Definition
maintains a steady flow of blood into the glomerulus (localized response not intended for long term)
Term
What type of special cells are located in the bladder and ureter
Definition
transitional epitherlium
Term
Renal Calculi
Definition
Kidney stones
Term
Electrolytes and 4 functions
Definition

inorganic compounds that dissolve into ions

1 conducts osmosis between body compartments

2 maintain acid-base balance

3 create electrical currents

4 cofactors for enzymes

Term
Body's Ideal pH level
Definition
7.35-7.45
Term

What 3 processes does the body have to attempt to maintain the pH level?

 

 

Definition

1 Buffer System

2 Lungs exhaling CO2

3 Intercollated cells in the kidneys release hydrogen molecules into the urine as needed

Term
3 Principle Buffer Systems
Definition

Carbonic Acid-Bicarbonate

Protein Buffer System (cytosol and Plasma)

Phosphate Buffer System (cytosol)

Term
Acidosis
Definition

when the body cannot protect itself and it becomes acidic

 

CNS is depressed

Term
Alkalosis
Definition

When body cannot protect itself and it becomes alkaline (basic)

 

CNS is overstimulated

Term
Respiratory Acidosis
Definition
too much CO2 (interference of gas exchange)
Term

Respiratory Alkalosis

 

Definition
Arterial blood pressure of CO2 is too low  (hyperventilating or getting rid of too much CO2)
Term
Metabolic Acidosis
Definition
blood bicarbonate concentration is too low (not enough hydrogen secreted by kidneys)
Term
Metabolic Alkadosis
Definition
blood bicarbonate levels are too high; body is losing too much acid (excessive vomitting or diarrhea) NON respiratory loss of acid
Term
where are the adrenal glands located?
Definition
On top of each kidney
Term
What 3 hormones do the adrenal cortex secrete?
Definition

mineralocorticoids- affect mineral homeostasis (aldosterone)

glucocorticoids-affect glucose homesostasis

androgens- synthesizing steroid hormones that have masculinizing effects (gonadicorticoids)

Term
The adrenal medulla is made up of what kind of tissue?
Definition
Nervous Tissue
Term
What are the two major hormones excreted from the adrenal medulla?
Definition
epinephrine and norepinehprine (increase heart rate and blood pressure, increase blood flow to heart, lier, skeletal muscles and adipose tissue, increase blood levels of glucose and fatty acids)
Term
What are the two PRIMARY hormones secreted by the pancreas?
Definition

Glucagon (raises blood glucose levels)

Insulin (loswers blood glucose levels)

Term
What does the Pineal Gland secrete?
Definition
Melatonin- in response to absense of light (causes sleepiness)
Term
What does the Thymus Gland secrete?
Definition
Thymosin (involved with maturation and propagation of T Cells)
Term
Gigantism
Definition

Pituitary Gland Disorder

 

growth plates remain open in children; hypersecretion of HGH in children

Term
Acromegaly
Definition

Pituitary Gland Disorder

 

hypersecretion of HGH in adults (mandible continues to grow along iwth hands, feet, cheeks, and the jaws while other tissues enlarge)

Term

Congenital Hypothyroidism

 

Definition
hyposecretion of thyroid hormones at birth (also known as cretinism) causes severe mental retardation and stunted growth
Term
Hypothyroidism in Adults
Definition
produces myxedema (more often in females) causes edema to accumulate and swell; slow heart rate, low body temperature, sensitiity to cold, dry hair and skin, muscular weakness and tendency to gain weight easily
Term
Grave's Disease
Definition

most common form of hypothyroidism (thyroid gland disorder)

 

autoimmune disorder  where person pridyces abtubidues tagt nunuc TSH producing an enlarged thyroid

Term
Goiter
Definition
enlarged thyroid galnd
Term
Pheochromocytomas
Definition

Adrenal Gland Disorder

benign tumors of adrenal medulla; causes oversecretion of norepinephrin and epinephrin; prolonged fight or flight

Term
Cushing's Syndrome
Definition

Adrenal Gland Disorder

redistribution of fats (spindly arms)

poor wound healing

Term
Addison's Disease
Definition

Adrenal Gland Disorder

hyposecretion of glucocorticoids and aldosterone

hypoglycemia, muscle weakness, LBP, looks bronzed, dehydration due to low sodium levels

Term
Diabetes Mellitus (I and II)
Definition

Type I- due to autoimmune illness; pancreas cannot produce insulin (usually found in children or young adults)

Type II-receptors are not functioning correctly, usually in overweight older adults

Term
Hyperinsulinism
Definition
occurs when a diabetic injects too much insulin; causes hypoglycemia and maybe insulin shock
Term
2 Types of Nephrons
Definition

Cortical Nephron- in Loop of Henle; only extends  slightly into pyramid (80%)

Juxtamedullary Nephron- Loop of Henle; extends much further down (20%)

Term
Peritubular Capillaries
Definition
circle around tubules filtering blood
Term
Vasa Recta
Definition
peritubular capillaries that only circle around the loop of henle in the juxtamedullary nephrons
Term
Serous Membrane of Renal Corpuscle (2)
Definition

Visceral Layer-made of podocytes on the glomerulus (inside)

Parietal Layer- makes up Bowman's Capsul

Term
Renal Functions (Physiology)
Definition

regulate volume and composition of blood

rids body of urea, creatinine, uric acid (wastes)

glomerular filtration of plasma

tubular reabsorption

tubular secretion

Term
Specialized Cells in DCT (2)
Definition

Principal cells- have specific receptor sites for aldosterone and ADH

intercollated cells-last opportunity to fine tune the pH of blood; can remove or add hydrogen ions to urine

 

Once you pass the specialized cells, the fluid becomes liquid

Term
Counter-Current Mechanism
Definition

applies to the Loop of Henle

ions are actiely pumped out in the ascending loop (water will want to follow but cannot leave)

this creates a greater concentration of solutes that draw water out of the descending loop

Forwards Process Affects Previous Process

Term
Action of Lipid Soluble Hormones
Definition

transported by a protein in the blood

receptor site is located in the cytoplasm or nucleus

alters the DNA which will then transcribe new proteins that change the cell's function

Term
Actions of Water Soluble Proteins
Definition

Receptor Site is located on the cell membrane

converts ATP to cAMP (occurs in cytosol)

causes a series of events that add phosphate to proteins and change their structure

Term
3 Types of gland stimulation
Definition

humoral-levels of substances in the fluids or blood cause a gland to secrete a hormone

nerual- nervous tissue stimulates the gland

hormonal- hormones from one gland stimulate another gland to release hormones

Term
Hypothalamus
Definition
conduit between nervous and endocrine systems
Term
Hypophyseal Portal System
Definition

bloodyish area connecting pituitary to hypothalamus

capillary bed to capillary bed

 

Term
CRH
Definition

corticotropin releasing hormone (hypothalamus)

 

to ACTH (adrenal corticotropin hormone) (anterior pituitary)

 

to Adrenal Cortext

Term
GHRH
Definition

growth horomone releasing hormone (hypothalamus)

 

to HGH (human growth hormone) in anterior pituitary gland

 

 to all over your body

Term
TRH
Definition

thyrotropin releasing hormone (hypothalamus)

 

 to TSH (thryoid stimulating hormone) anterior pituitary

 

to Thyroid

Term
GNRH
Definition

gonatotropin releasing hormone (hypothalamus)

 

to FSH/LH (follicle stimulating hormone and lutinizing hormone) anterior pituitary gland

 

 to ovaries and testes

Term
PRH
Definition

polactin releasing hormone (hypothalamus)

 

to prolactin (anterior pituitary)

 

to mammory glands

Term
Posterior Pituitary Gland
Definition

made of nervous tissue

does not make any hormones of its own

stores 2 hormones from hypothalamus

1 ADH

2 Oxytocin (stimulates pregnancy contractions)

Term
Thyroid gland
Definition
tissue made of of follicular cells that produce T3 and T4
Term
Thyroglobulin
Definition
gel like substance in the thyroid gland that stores T3 and T4
Term
What stimulates T3 and T4 to be released?
Definition
TSH
Term
What are T3 and T4 responsible for?
Definition
regulating metabolism, growth of cells, chemical processes
T4 is slow acting
T3 is fast acting
Term
parafollicular cells
Definition
located in between follicle cells in the thyroid gland

secrete calcitonin (gets calcium out of the blood when levels are too elevated)
Term
Parathyroid Glands
Definition
(4) embedded in the thyroid galnds

secreted PTH when calcium levels in the blood are low; this travels to the kidney for the release of calcitreal (Vit D) that travels to the guy to release more calcium into the blood
Term
Renin
Definition
produced by the afferent arteriole in response to LBP
Term
The visceral layer of the glomerular capsul consists of?
Definition
podocytes
Term
Aldosterone acts of the ______ to cause _______________.
Definition
DCT, sodium and water reabsorption
Term
The major fluid compartment of the body is?
Definition
Intracellular Fluid
Term
trigone
Definition
area on the floor of the urinary bladder flattened by three openings
Term
Where are interlobular arteries and veins located?
Definition
in the cortex of the kidney
Term
the network of capillaries where the filtration of the blood occurs in the..
Definition
glomerulus
Term
inhibin
Definition
secreted by sertoli cells and regulates FSH
Term
thymosin
Definition
establishes the fetal ability to tell self from non-self
Term
This hormone acts on itself to change transcription and genetic activity
Definition
aldosterone
Term
The walls of the heart produce ____ which _____ blood pressure
Definition
ANP, decreases
Term
ADH and oxytocin are produced by the ___________
Definition
hypothalamus
Term
prostaglandin
Definition
eicosanoid that acts on smooth muscle
Term
PTH
Definition
causes calcium levels to rise
Term
Erythopoietin is produced by the _______ and targets ____________
Definition
kidney, bone marrow
Term
Calcitonin
Definition
takes calcium out of the blood and increases bone formation
Term
What produces aldosterone?
Definition
Zona glomerulosa in the adrenal cortex
Term
What hormones are produced by the adenophypophysis?
Definition
prolactin and TSH
Term
Oxytocin targets
Definition
the myometrium of the uterus
Term
Estrogen targets
Definition
the endometrium of the uterus
Term
Erection of the penis is sympathetic or parasympathetic?
Definition
parasympathetic
Term
Capacitation
Definition
the removal of inhibitors form the acrosome of the sperm (occurs in the uterus)
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