Cardiovascular
Respiratory
Digestive
Nervous
Urinary
100

This is the pacemaker of the heart.

What is the sinoatrial node?

100

This structure has c-shaped cartilage rings to keep it open.

What is the trachea?

100

Bile is produced here.

What is the liver?

100

This is the part of the neuron where messages enter the soma.

What are dendrites?

100

This is the functional unit of the kidney.

What is the nephron?

200

This is the protein on a erythrocyte that allows it to carry oxygen.

What is hemoglobin?

200

This is the area where the trachea bifurcates.

What is the carina?

200

This is known as the "fatty apron".

What is the greater omentum?

200

This is the most inferior portion of the brainstem.

What is the medulla oblongata?

200

This area in the floor of the bladder is where the ureters and urethral opening are located.

What is the trigone?

300

These formed elements of blood aid in blood clotting.

What are platelets?

300

This substance helps to keep alveoli open.

What is surfactant?

300

This endocrine/exocrine gland helps to neutralize the acid in the duodenum.

What is the pancreas?

300

This neuroglial cell produces cerebrospinal fluid.

What is an ependymal cell?

300

Filtration, secretion, and reabsorption.

What are the functions of the nephron?

400

This structure in the heart aids in the opening and closing of the valves.

What are chordae tendinae?

400

This is the part of the pleura that is directly attached to the lung.

What is the visceral pleura?

400

This peritoneal fold holds the liver in place.

What is the falciform ligament?

400

This meningeal space is the location of CSF.

What is the subarachnoid space?

400

This is the first portion of the kidney where urine is collected.

What is a calyx (calyces)?

500

This is the outer covering of the heart.

 What is the pericardium?

500

This is a very common lower respiratory infection.

What is pneumonia?

500

Plicae cirulares are found here.

What is the small intestine?

500

The blood brain barrier is maintained by this neuroglial cell.

What is an astrocyte?

500

This is made up of the glomerulus, the bowman's capsule, and the bowman's space.

What is the renal corpuscle?