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PHSL 1010 Exam 1 Questions And Accurate Answers A+ Graded

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PHSL 1010 Exam 1 Questions And Accurate Answers A+ Graded...

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  • November 5, 2024
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  • phsl 1010 exam 1
  • PHSL 1010
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PHSL 1010 Exam 1 Questions And Accurate
Answers A+ Graded


What is the general purpose of feedback mechanisms - ANSWER the bring about rapid
change in the body



What is a hormone - ANSWER a chemical regulator secreted from an endocrine gland
that travels through the bloodstream to affect target cells



What is the best description of how the total body balance of any chemical substance is
determined? ANSWER The difference between the amount of substance lost from the
body and the amount gained



Which directly determines an atom's identity? ANSWER the number of protons



Which of the major ions found in the body carries a negative charge? ANSWER Chloride



What is true of electrolytes - ANSWER they conduct electricity when dissolved in water



Molecules that have properties of both polar and non polar molecules are called -
ANSWER amphipathic



The pH of a solution - ANSWER Is a measure of the concentration of free H ions in the
solution



which chemical group does glucose best fit into - ANSWER monosaccharides



Four basic types of cells - ANSWER muscle, nerve, connective tissue, epithelial

,What are the four general categories of cells that comprise the human body - ANSWER
epithelial, connective tissue, neuron, muscle



Physiology is the study of - ANSWER How organisms function



The study of disease states in the body is called - ANSWER Pathophysiology



Bone cells, blood cells, fat cells, and cartilage cells are types of - ANSWER connective
tissue cells



Connective tissue does what - ANSWER connects, anchors, supports



connective tissue is found - ANSWER in loose meshwork of cells and fibers



Loose connective tissue is found - ANSWER in loose meshwork of cells and fibers
underlying epithelium



Dense connective tissue is - ANSWER tough, rigid tissue (tendons and ligaments)



What is the principal function performed by epithelial cells - ANSWER forming
boundaries between body compartments



Functions of epithelia - ANSWER form boundaries with body compartments, function as
selective barriers-regulate molecule exchange; specialized cells for the selective
secretion and absorption of ions and organic molecules; protection



The cell type that is specialized to communicate with other cells and control their
activities is - ANSWER nerve cells

, Nervous system cell that initiates, integrates, and conducts electrical signals to other
cells - sometimes over a long distance - ANSWER neuron



Cellular extensions of neurons packaged with connective tissue carries signals between
the nervous system and other parts of the body ANSWER nerve



What term means the specialized cell types arise from development ANSWER
differentiation



What is the best description of the extracellular matrix ANSWER it surrounds cells;
contains proteins, polysaccharides, and minerals. Provides a scaffold for cell
attachment. transmits messengers to cells



extracellular matrix is composed of - ANSWER combination of proteins,
polysaccharides, and minerals



Collagen fibers - ANSWER ropelike fibers



elastin fibers - ANSWER rubberband like fibers

type of fiber that can be compared to concrete packing material - ANSWER nonfibrous
protein containing a carbohydrate



Functions of extracellular matrix - ANSWER provide scaffold for cellular attachments.
chemical messengers transmit info to cells for growth. differentiation, activity, and
migration



If a person begins to sweat upon entering a hot room but continued sweating is able to
keep body temperature constant, which best describes her condition - ANSWER She is
in a steady state



Homeostasis: dynamic equilibrium - ANSWER Maintenance of stable internal
environment. Variables are kept in normal range around set point.

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