There are three openings in the bladder that form a triangular region at the base of the bladder called the trigone. What do the openings
... [Show More] accommodate?
Two for the ureters and one for the urethra. - These openings frame a triangular region at the base of the bladder called the trigone.
The nature of one of the urethral sphincters is that it opens during contraction and closes during relaxation. Which urethral sphincter functions in this way?
The internal urethral sphincter - When urine is not draining from the bladder, the internal urethral sphincter closes off the urethra and prevents the leakage of urine when not voiding. The nature of this sphincter is unusual; in contrast with other sphincters in the body, it opens during contraction and closes during relaxation.
Which tissue types are found in the ureters?
Epithelial, muscular and connective - The lumen of the ureter is impermeable epithelium, the next layer is a stretchable smooth muscle and the outermost adventitia is tough connective tissue.
The kidneys are just above waist level but are asymmetrical in their exact location. Why is this?
The liver takes up space on the right side of the abdominal cavity, superior to the kidney.
Each kidney is enshrouded in three tissue layers which are called:
Renal capsule, adipose capsule, renal fascia - For protection, each kidney is enshrouded in three tissue layers. The innermost layer is the renal capsule, the adipose capsule is the middle tissue layer, and the renal fascia is the superficial tissue layer. The renal fascia fastens each kidney to neighboring structures and to the abdominal wall.
Into what gross structure of the kidney do the renal vein, renal artery and ureters enter?
Renal hilum - The impression that gives the kidney its bean-like shape is the hilum, and the vasculature and ureters enter in this area.
In the image above, which letter represents the ureter?
E - The ureter transports urine from the kidney to the bladder.
In the image above, which letter represents the renal pyramid?
A - The renal pyramid has a somewhat triangular shape.
In the image above, which letter represents the renal cortex?
B - The smooth-textured renal cortex runs from the renal capsule to the bases of the renal pyramids and extends towards the renal pelvis.
The parenchyma (functional part) of the kidney includes the _________, which acts as a filter for the blood by removing waste and the _________, which helps maintain the proper balance of salt and water in the blood.
Renal cortex; renal pyramids - Two structures dominate the internal anatomy of the kidney. The renal medulla is made up of cone-shaped structures called renal pyramids and its' primary purpose is to maintain the proper balance of salt and water in the blood. The bases of the pyramids border the renal cortex, which acts as a filter for the blood by removing waste.
In the diagram of a nephron above, which letter represents the glomerulus?
C - The glomerulus is a bundle of capillaries within the renal corpuscle.
In the diagram of a nephron above, which letter represents the proximal convoluted tubule?
D - The proximal convoluted tubule has a twisted structure and is near the renal corpuscle.
In the diagram of a nephron above, which letter represents the collecting duct?
F - The collecting ducts receive fluid from several nephrons. [Show Less]