Exam 3 Flashcards
Which blood vessel allows for diffusion?
capillary
The heart is considered to be a double pump because?
the two sides of the heart pump blood that never mixes
The cardiac muscle tissue is called the?
myocardium
Functions of the lymphatic system include?
returning excess interstitial fluid to the bloodstream, defending against disease-causing organisms, transporting products of fat digestion from the small intestine to the bloodstream.
A pathogen has entered your body. Which of the following is likely to happen next to defend against this organism?
Phagocytic cells engulf harmful microbes.
What is an antigen?
a large molecule on the surface of an invader that triggers an immune response
The release of stored memory B and T cells in response to a second encounter with an antigen is called?
secondary response
When you swallow food, why does it NOT usually enter the respiratory system?
The epiglottis covers the opening to the respiratory system.
When you inhale, what happens?
your diaphragm lowers the pressure in your chest cavity
What is the most important cue that prompts you to breathe again after holding your breath?
the increase in carbon dioxide levels
The tongue functions to what?
position food for swallowing
What is the most important function of the stomach?
storage of food
If a person were born with the inability to produce pepsin, how would this affect his or her digestion?
He or she would digest proteins with difficulty.
What is the specific name of the process that recovers useful materials from the filtrate and returns them to the blood?
tubular reabsorption
The filtrate moves out of the glomerular capsule to the what? and then to the loop of the nephron
proximal convoluted tubule
