infect humans directly from eggs passed in feces of other humans (__________)

, if the insect that harbors the larval stage ( cysticercoid ) is accidentally eaten , the larvae develop Into adult worms in humans (__________)

Hymenolepis nana Embryonated egg in feces

cysticercoid-arthropods

In Hymenolepis nana massive infections, mostly in____

massive infections,, occur as a result of internal autoreinfection when the eggs hatch in the gut without leaving the intestine

Other than these instances of extremely heavy infection, disease caused by these worms is limited to minor intestinal disturbance

The, _____which are predominantly smooth muscle,

They act as control valves through which blood is released as it moves into the capillaries.

Changes in the activity of ______ fibers that innervate these vessels cause them to constrict or relax as needed to maintain blood pressure.

The venous system (veins) is a hige-pressure system that returns blood to the heart.

The _____ collect blood from the capillaries,

veins transport blood back to the ==➔________Vena Cava

the pressure in the left atrium is called the central venous pressure.

————anything that moves through the blood vessels until it reaches a vessel that is too small to let it pass. When this happens, the blood flow is stopped by the embolus.