lab 1

Question 1

base

Answer 1

lower support of microscope

Question 2

turret

Answer 2

allows the oculars to revolve around once the screw is loose

Question 3

arm

Answer 3

connects base to head

Question 4

ocular

Answer 4

contains a lens that magnifies by 10x. one has a pointer

Question 5

objective lens

Answer 5

4 lenses that have magnifications of 4x, 10x, 40x, and 100x (oil immersion lens)

all of these lenses are multiplied by 10x due to the occular lens (40x, 100x, 400x, 1000x)

Question 6

nosepiece

Answer 6

rotating mechanism below turret with lenses attached. used to switch lenses

Question 7

stage

Answer 7

flat surface that supports the slide over the hole that allows light from below

Question 8

mechanical stage

Answer 8

holds slide in place with a spring clip, allows for slide manipulation

Question 9

mechanical stage knobs

Answer 9

one moves slide vertically, the other horizontally

Question 10

coarse focus knob

Answer 10

changes distance between objective lens and slide to permit rough focusing. dont use with 40x or 100x lenses

Question 11

fine focus knob

Answer 11

permits precise focusing once coarse focusing is complete

Question 12

condenser lens

Answer 12

small substage lens that focuses light onto the slide

Question 13

condenser adjustment knob

Answer 13

moves condenser lens up or down. generally best kept close to stage

Question 14

iris diaphragm

Answer 14

regulates the amount of light passing through condenser lens. reducing light increases contrast of semitransparent objects

Question 15

iris diaphragm level

Answer 15

bent arm attached to the bottom of the condenser. adjusts iris opening size

Question 16

blue filter

Answer 16

Increases resolution by reducing wavelength of light, located directly under iris diaphragm

Question 17

lamp switch

Answer 17

turns on light

Question 18

lamp intensity dial

Answer 18

adjusts light intensity

Question 19

orientation of slide (how will you see images)

Answer 19

slide will be upside down and backwards

Question 20

mm to micrometers

Answer 20

x1000

Question 21

micrometers to nanometers

Answer 21

x1000

Question 22

REVIEW CELL COMPONENTS AND ANATOMICAL REGIONS AND DIRECTIONAL TERMS (no answer

Answer 22

:)

Question 23

diopter adjustment

Answer 23

piece that moves the ocular horizontally