Which letter in the figure represents the diaphragm?

• G

• I

• H

• J

• K

Proximity of capillaries to tissue cells is crucial because

• red cells have to squeeze single file through capillaries.

• all of these are true.

• bulk flow operates to move protein-free plasma through clefts between endothelial cells.

• some proteins exit capillaries by endocytosis and exocytosis.

• this is where nutrient and waste exchange occur.

Tags

NGSS.HS-LS2-3

Blood is pumped to the majority of the body by this structure.

• right ventricle

• left ventricle

• right atrium

• left atrium

This blood component contains hemoglobin.

• albumin

• basophils

• platelets

• red blood cells

Most of the oxygen in the blood is transported by

• leukocytes

• hemoglobin

• megakaryocytes.

• plasma.

• platelets

The ____ prevents food and fluids from entering the ____.

• epiglottis; esophagus

• epiglottis; larynx

• pharynx; trachea

• pharynx; larynx

• larynx; pharynx

Countercurrent flow in the respiratory systems of fish is a mechanism that accounts for

• the transport of blood from the gills to the fish's heart.

• oxygen uptake by blood capillaries in the gills.

• the transport of blood from the heart to the fish's main body mass.

• the flow of blood in gills as opposed to the flow of blood in the main body mass of fish.

What is the name of the breathing structure pictured here:

• a book lung.

• a tracheal system.

• a lung micrograph.

• none of these.

Which letter in the figure represents the larynx?

• F

• D

• E

• C

• G

Blood in arteries

• travels away from the heart only if its oxygenated

• always travels toward the heart

• always travels away from the heart

• travels from the lungs