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Homeostatic kidney functions
- blood ionic composition
- blood pH
- blood volume
- blood pressure
The liver converts ammonia to ?
The urinary system consists of ?
The Hilum of the kidney is the entrance for ?
- renal artery
- renal vein
What percentage of the the blood supply do kidneys receive?
20-25% of resting cardiac output
What part of the kidney determines what is pulled into the urine for excretion?
The loop of Henle
Name the two kinds of Nephrons
- Cortical Nephrons
- Juxtamedullary Nephrons
The most common type of nephron that is in the outer portion of the cortex, creates urine with osmolarity similar to blood
The Nephrons that receive blood from peritubular capillaries and vasa recta, enables kidney to secrete very concentrated urine
Filtering of body fluids
Reclaiming valuable solutes
Adding nonessential solutes and wastes from the body fluids to the filtrate
Processed filtrate containing nitrogenous wastes, released from the body
GFR is controlled by ?
- Renal autoregulation
- Neural regulateion
- Hormonal regulation
An increase in what triggers the release of ADH which helps to conserve water?
ADH binds to this type of collecting cell makes is easier to move H2O in and out of the cell
When does the Renin-Angiotensin-Aldosterone System (RAAS) kick on?
Low blood pressure
reproduction that is asexual or cloning
reproduction that involves egg and sperm
Why is genetic variation and diversity beneficial?
- makes chances of survival in different environments better
- shuffling genes may eliminate harmful genes from populations
What is cryptic estrace and why?
- unknown when human females ovulate
- thought to keep the partner around for support and care and ensure that the child is yours
What does the bulbourethral gland secrete?
pre-ejaculate to prepare the urethra pH for the sperm
The term for the production of gametes?
How many cellular divisions in meiosis of oogenesis?
- 2 cellular divisions
- then to four cells and only one will become a viable egg
Going from 46 to 23 chromosomes is called
An egg does not finish forming until when?
it is fertilized
An egg does not go through Meiosis II until when?
a sperm enters