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Melissa Aguilera

Study stack set 2

QuestionAnswer
What are dopamine, epinephrine, and norepinephrine are classified as? catecholamines
The only ion(s) that can diffuse across a neuron’s membrane when the neuron is at rest is (are)? potassium
What is the difference between a somatic reflex and an autonomic reflex? A somatic reflex is caused by contraction of skeletal muscles, whereas an autonomic reflex consists of contraction of smooth or cardiac muscle or secretions of glands.
What is a mixed nerve? it carries both sensory and motor fibers
Where are Visceroceptors located? Internal organs
The receptors responsible for sensing crude and persistent touch are called what? Ruffini corpuscles
During pregnancy, what happens to the oxygenated blood returned from the placenta via the umbilical vein? It flows into the inferior vena cava
Erythrocytes begin their maturation sequence in red bone marrow from nucleated cells known as what? hematopoietic stem cells
What are the functions of the lymph nodes? defense and hematopoiesis
Which protein interferes with the ability of viruses to cause disease? interferon
By the time the blood leaves the lung capillaries to return to the heart, what percentage of the blood’s hemoglobin has united with oxygen? 97%
One hundred milliliters of arterial blood contains approximately what volume percent of oxygen? 20%
What is the purpose of peristalsis? To propel food forward along the GI tract
Which step of deglutition is under voluntary control? Oral stage
Created by: MellyA
 

 



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