A&P Lab 1: Intro Flashcards
Scientific method
analytical process that seeks to answer questions about our world; involves posing a specific question and then searching for objective (unbiased) answers to the question
Observation
1st step in searching for an objective answer to a question
Hypothesis
statement that seeks to explain the observation
Experiment
hypothesis is tested during this, during which the conditions that produced the observation are repeated in an environment that can be carefully controlled and monitored
Control
set of conditions that duplicates the observation minus the variable; provides a standard to which the experimental group can be compared in order to examine the effect of the variable
Conclusion
accepting or rejecting the hypothesis
Metric system
universal tool of measurement and analysis
Scientific notation
abbreviation of a very large or very small number using a number x 10^n
Meter (m)
metric unit for length/distance
Liter (L)
metric unit for volume
Mass
amount of matter of an object
Gram (g)
metric unit of mass
Degrees Celsius
metric unit of temperature
Fahrenheit formula
F = 9/5C +32
Celsius formula
C = 5 (F - 32)/9
Blunt probe
rigid 5-inch steel instrument with a blunt, usually bent tip; useful for tearing through connective tissue, tearing muscles apart, and separating fragile structures from their attachments
Scissors
usually 4-6 inches long with the end of 1 blade pointed and the other rounded; used to cut through skin, cut muscles through their center (called bisect), and make other large, clean cuts through major structures
Scalpel
usually 5 inches with replaceable blades; used to gently scrape away connective tissue and fat, cut through tough fibrous tissues, and make small incisions; use sparingly (can cause irreparable damage to the specimen)
Needle probe
a 3-inch needle usually attached to a wooden handle; used as a pointer or to attach the specimen to the dissecting tray
Forceps
about 5 inches long with handles transversely ridged to prevent fingers from slipping; the ends should be blunt and rounded and the gripping surfaces grooved; used to grasp small objects and to remove/pull away connective tissue
Protective gear
preservative can be irritating to skin and damage clothes, so protective gloves and lab coat/apron should be worn while dissecting; eye protection recommended