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In the kidney, sympathetic control primarily influences the regulation of blood flow and renin release. Activation of the sympathetic nervous system can lead to vasoconstriction of renal blood vessels, reducing blood flow to the kidney. It can also stimulate the release of renin, which plays a role in regulating blood pressure and fluid balance.
What else can I help you with?
Are the structures that specifically exhibit vasomotor tone mostly under sympathetic control?
True
Does the brain control the kidney?
Yes, the brain controls the kidney through the release of hormones that regulate kidney function, such as antidiuretic hormone and aldosterone. The brain also plays a role in regulating blood pressure, which directly impacts kidney function.
Proper control of the respiratory passages depends upon?
Proper control of the respiratory passages depends upon the coordination of muscles in the diaphragm, intercostal muscles, and other accessory respiratory muscles. Additionally, the autonomic nervous system plays a key role in regulating the dilation and constriction of the airways through the action of the sympathetic and parasympathetic nerves. This control ensures the optimal exchange of oxygen and carbon dioxide in the lungs.
Why is it important for the sympathetic nervous system to be able to override the kidney's autoregulatory systems?
If blood pressure drops too low due to excessive fluid loss, then the sympathetic nervous system will override renal autoregulation. Sympathetic nerves innervate the afferent arteriole, causing smooth muscle contraction, decreased GFR and decreased fluid loss via urine. Another effect of the sympathetic nervous system is to stimulate renin secretion by the juxtaglomerular cells, activating the renin-angiotensin-aldosterone system (RAAS). The RAAS increases extracellular fluid volume by increasing sodium reabsorption (see later web page on sodium).
Name the blood vessel that brings blood under high pressure to the kidney?
The renal artery brings oxygenated blood under high pressure to the kidney, where it branches into smaller vessels to deliver blood to the nephrons for filtration.
Is digestion under parasympathetic or sympathetic control?
both
Are the structures that specifically exhibit vasomotor tone mostly under sympathetic control?
True
If a ureter is obstructed what reflex reduces urine production in the kidney on the affected side?
sympathetic (ureterorenal) if you're using hole's anatomy, "sympathetic" is sufficient as an answer.
Which ANS is normally in control?
sympathetic division
Does sympathetic have more specific control than parasympatetic?
parasympathetic
In each kidney there are nephrons?
Yes, many in each kidney. Nephrons are the functional unit of the kidney where filtration of the blood contents occurs and urine is produced - and its degree of concentration is determined. Various hormones and sympathetic stimulants act on the kidney to regulate these processes.
The involuntary muscles are controlled by what?
The involuntary muscles are primarily composed of smooth muscle and specialized striated muscle known as cardiac muscle. All skeletal muscle is under voluntary control. Hence, the involuntary muscles are under control of the autonomic nervous system, which can be further divided into the sympathetic and parasympathetic divisions. The sympathetic division is readying the body into action, hence the "fight or flight" response associated with it, and the parasympathetic division associated with "rest and digest". :)
Does the arector pili muscles receive direct parasympathetic innervation?
Arector pili muscles get innervation from sympathetic out flow. But the neurotransmitter is acetylcholine. So functionally the nerve supply is parasympathetic.
What is innervate?
Innervated by both the sympathetic and parasympathetic nervous system. This allows for both branches of autonomic NS (sympathetic and parasympathetic) to precisely control an organ's activity.
What are sympathetic chains?
it affect the organs of heart,stomach,liver,kidney,blood vessels,trachea-lungs,pupil,glands,intestine and bladder......
Is water volume control a function of the kidney?
yes
Are kidney enzyme level little above normal dangerous?
Yes, having a higher than normal kidney enzyme reading can be critical and life threatening. Your doctor will run other tests and might start treatments to get the levels under control.
