Video Transcript
The diagram provided shows the
macroscopic outline of a human kidney. What structure in the kidney is
represented by label one? What structure in the kidney is
represented by label two? What structure in the kidney is
represented by label three?
The question provides us with a
diagram that represents a human kidney. One part shows us the outer view,
and the other part is a cross-sectional diagram showing us the inner structure. And they’ve asked us to identify
the parts indicated by the numbered labels. So in order to answer this
question, we’ll go ahead and label all the parts of the kidney, and then we’ll be
able to easily recall our answers. First, the kidney has a tough outer
coating, referred to as the renal capsule. Kidney tissue is very soft and
delicate, and the capsule helps to protect and support it. Inside the kidney, there are two
different types of tissues: the cortex, which is the outer layer of tissue, and the
medulla, which are these teardrop-shaped inner sections.
“Cortex” is a Latin word that means
bark like on a tree, and “medulla” is the Latin word for the soft inner plant tissue
of the stem. In anatomy, cortex and medulla are
often used to refer to the outer and inner layers of different types of tissue. The urine produced by the kidneys
collects in the center in a section known as the renal pelvis. And the urine is transported from
the kidneys to the urinary bladder by the ureter. The blood vessels that supply the
kidneys are the renal artery, which carries blood from the heart to the kidneys, and
the renal vein, which carries blood from the kidneys back to the heart. So now we recalled all the
information we need to answer our questions. The structure represented by label
one is the cortex. The structure represented by label
two is the medulla. And the structure represented by
label three is the renal artery.
