Flashcards in TEAS: Science Assorted Deck (38)
What do you call the part of the peripheral nervous system that regulates unconscious body functions such as breathing and heart rate?
autonomic nervous system
What do you call a nerve fiber that carries a nerve impulse away from the neuron cell body?
What do you call a bundle of nerve fibers that transits electrical impulses toward and away from the brain and spinal cord?
What is the structure that allows neurons to pass signals to other neurons, muscles, or glands?
Nucleic acids make up ______.
Which of the following best describes how a signal travels across a nerve synapse?
Electrical is how signals move through the nerve cells.
Kinetic isn't associated w/ the synapse.
Potential isn't associated w/ the synapse.
The Medulla Oblongata senses what in the blood?
pH levels (high acidity means there's a lot of carbon dioxide)
Gas Exchange in the lungs is called _______.
diffusion. (Oxygen in the lungs moves to the blood, and carbon dioxide in the blood moves to the lungs)
True of False - The rate of diffusion is proportionate to the surface area involved & the concentration gradient?
Is Cystic Fibroses hereditary?
What is surprising about a Coronavirus, given its popularity in the news?
It actually often causes a common cold. The newsworthiness is because we're seeing a new strand of coronavirus.
The prefix myco- is used in relation to what?
Tiny air sacs in the lungs where exchange of oxygen and carbon dioxide takes place
A lung disease characterized by inflamed, narrowed airways and difficulty breathing
The main passageways directly attached to the lungs
Small passages in the lungs that connect bronchi to alveoli
Cystic Fibrosis is a genetic disorder that causes build-up in which main organ?
Perfusion is the act of _____
passing fluid to an organ or tissue
What is the membrane that encompasses the lungs?
Surfactant is a fluid secreted by the ______ and found in the lungs
What is "Tidal Volume"
The amount of air breathed in inhaling or exhaling
What is the windpipe that connects the larynx to the lungs?
What do you call the process of air movement when you're breathing?
What do you call a colorless fluid containing white blood cells, which bathes the tissues and drains through the lymphatic system into the bloodstream.
Do arteries bring blood to or away from the heart?
away from the heart
Do veins being blood to or away from the heart?
into the heart
The cardiovascular system is made of 2 main circulatory systems - open and closed. Which one pumps blood into a cavity called a hemocoel where it surrounds the organs and then returns to the heart(s) through ostia (openings)?
The cardiovascular system is made of 2 main circulatory systems - open and closed. Which one circulates blood unidirectionally from the heart, around the body, and back to the heart.
Structure of the heart:
The heart is divided into four chambers consisting of two atria and two ventricles; the ______ receive blood, while the ______ pump blood.
The right atrium receives blood from the superior and inferior vena cavas. Blood then moves to the right ventricle where it is pumped to the _______.
The lungs re-oxygenate the blood and send it to the left atrium.
Blood moves from the left atrium to the left ventricle via the bicuspid valve; blood is pumped out of the left ventricle to the _____, which sends blood to the organs and muscles of the body.
The heart is composed of three layers: the epicardium (_____(inner or outer) layer), the myocardium (middle layer), and the endocardium (______(inner or outer) layer).