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OSMOREGULATION, water in our body per day - Coggle Diagram
OSMOREGULATION
blood pressure
blood pressure refers to the blood exerts on the walls of the blood vessels
vasoconnstriction
-the narrowing (constriction) of blood vessels by small muscles in their walls
the beating rate and power of contraction of the heart
cardiac output
- is a product of heart rateand stroke volume
beats per minutes x the volmue of blood pumped per beat
blood volume
when blood volume increases more blood returns to the heart with each cycle
the increase in stroke volume the increases cardiac output and thus the arterial blood pressure
kidneys
the functional unit of the kidney is the
nephron
functional unit of the kidney, the structure that actually produces urine in the process of removing waste and excess substances from the blood.
There are about 1,000,000 nephrons in each human kidney
the nephron is a selective filter element made up of a
renal corpuscle
the kidneys excrete the bodys waste
regulates fluid and electrolytes balance, blood pressure, and red blood cells
turns into urine
the kidneys roles are in excretion and fluid and ion homeostasis
human kidenys are very efficient producing a urine that is concentrated to varying deggrees depending on requirements
the urine is very concentrated when the body is dehydrated
water loss is a major problem for most mammals
how the kidney regulates fluid and electrolytes
the primary role of the kidney is to regulate blood volume and compostion so that homeostasis is maintained
the kidneys produce an excretory fluid called urine
by varying the volume and compostion of the urine, the body is able to regulate its fluid and electrolytes balance, while excreting nitrogenous wastes.
water in human body
63% of our daily requirement for water is met through drinking fluids
water is required for physiological processes to function
water needs vary depending on age and sex
definition of osmoregulation
The process by which an organism regulates the water balance in its body and maintains the homeostasis of the body
25% is obtained from food
the remaining 12% comes from metabolism
blood pressure is closely regulated and goes up and down depending on the volume of blood
water in our body per day