FINAL: diabetes/male and female repro disorders/renal disorders Flashcards
Which cells of the pancreas secrete glucagon?
∂ cells of the Islets of Langerhans
Which cells of the pancreas secrete insulin?
ß cells of the Islets of Langerhans
What is the function of insulin?
anabolic hormone that promotes insulin inside of the cell. Lowers the glucose level of the bloodstream by pulling glucose into the cells (and therefore tissues) to be metabolized.
What is the function of Glucagon?
catabolic hormone that converts stored glycogen in the cells of (and therefore tissues of) the LV to glucose and raises the amount of glucose in the bloodstream. Opposite of Insulin.
When would the body need Glucagon to break down glycogen into Glucose?
Periods of strenuous labor or exercise or when the blood sugar level gets too low.
What is a normal Fasting Glucose Level?
70-100mg/dL
What level of glucose in blood is considered Glucose Intolerance or “pre-diabetes”?
140-199mg/dL
What level of glucose in blood is considered Diabetes?
above 200mg/dL
Which type of diabetes is autoimmune?
diabetes mellitus Type 1
Which type of diabetes is environmental?
diabetes mellitus Type 2
This type of diabetes is characterized by a loss of insulin producing ß-cells leading to a deficiency of insulin:
diabetes mellitus type 1 - usually a T-cell mediated autoimmune attack.
This type of diabetes is due to an insulin resistance or reduced insulin sensitivity:
diabetes mellitus type 2 - eventually this leads to a loss of insulin secretion
Which type of diabetes is caused by either a deficiency of ADH or an insensitivity (by receptors in the distal convoluted tubules of the KD) to ADH?
diabetes insipidus also called Neurogenic Diabetes Insipidus if the pituitary gland is not producing ADH and Nephrogenic Diabetes Insipidus if there is increased intolerance to ADH by the receptors in the distal convoluted tubules - this one is related to the hypothalamus.
All untreated types of diabetes can present with polyuria, polydipsia and polyphagia. What symptom differentiates diabetes insipidus from diabetes mellitus?
diabetes insipidus will have diluted urine with LOW SPECIFIC GRAVITY. Diabetes mellitus will have a HIGH SPECIFIC GRAVITY. Diabetes mellitus also leads to neuropathies and nephropathy, retinopathy and vascular deficiencies (DI will not)
What is measured in a diabetes patient to control and monitor progress?
A1C Test - to measure the glycosylated hemoglobin. 6-6.5% is considered normal.
What is gestational diabetes?
A glucose intolerance initially detected during pregnancy due to the effects of human the chorionic gonadotropic hormones (estrogen, testosterone) causing a resistance to insulin by the receptors. A diabetogenic state - but not exactly diabetes.
What does Aldosterone do?
released from the adrenal glands, it functions to retain sodium in the blood.
What does cortisol do?
released by the adrenal glands to regain homoeostasis following stress or sleep. We wake up in the morning because of high levels of cortisol that constrict our blood vessels to return more blood to the heart. Cortisol also regulates the release of epinephrine and norepinephrine
What is the relationship between cortisol and insulin?
cortisol counters insulin by encouraging more glucose in the blood by stimulating gluconeogenesis.
What is the function of the leydig cells?
located in the seminiferous tubules - important function to secrete testosterone.
What is the function of the sertoli cells?
located in the seminiferous tubules - important function to create the blood-testes barrier.
What occurs in the seminal vesicles?
provides liquid that mixes with the semen and the fluid from the epididymis to form seminol fluid. The fluid is mostly sugar and provides nutrition for the sperm>
Where do sperm mature?
final maturation occurs in the epididymis
What are the three parts of the urethra?
prostatic, membranous and spongy
Prostatic urethra: The prostatic urethra is that part of the urethra that passes through the prostate.
Membranous urethra: The membranous urethra is the shortest part of the urethra that connects the prostatic to the spongy urethra.
Spongy or penile urethra: The spongy urethra is the last part of the urethra that carries urine outside the body.
What is the major function of the prostate gland?
activation of testosterone to dihydrotestosterone (DHT - the active form of T)