Biology 2 Lab Final

What does the ocular lens do?

the lens at the top that you look through, usually 10x or 15x

What does the body tube do?

connects the eyepiece to the objective lens

What does the objective lens do?

changes the magnification (4x,10x,40x,100x)

What does the stage do?

where you place the slides

What does the condenser do?

focus the lught on the speciman

What does the light source do?

uses reflection to bring light to slide

What does the base do?

the bottom of the microscope, used for support

What does the lock screw do?

keeps the user from breaking the slide

What does the arm do?

supports the tube and connects to the base

What does the mechanical stage do?

allows to move the slide around on the stage

What does the coarse focusing knob do?

moves the stage up and down to bring specimen into focus

What does the fine focusing knob do?

used to bring the specimen into sharp focus

What does the mechanical stage control do?

allows to move the slide around on the stage

What does the voltage control knob do?

regulates light intensity

What does field of view mean with a microscope?

its the maximum area visible when looking through the microscope eyepiece usually quotes as a diameter measurement

What does depth of field mean with a microscope?

this is the distance between the two planes which define the limits of acceptable image sharpness when the microscope is focused on an object

What are the 3 bacterial shapes?

Baccilus (rod), coccus (sphere), sprillus (spiral)

What structure allows a bacterial cell to be motile?

What is the flagella and what does it do?

a slender threadlike structure, especially a microscopic appendage that enable many protozoa, bacteria, spermatozoa, to swim

What is a cyanobacteria?

a phylum of bacteria that obtain their energy through photosynthesis, and also known as blue green bacteria, blue green algae, or cyanophyta

Identify the parts of a clam: excurrent siphon

Identify the parts of a clam: incurrent siphon

Identify the parts of a clam: posterior adductor muscle

Identify the parts of a clam: foot

Identify the parts of a clam: mantle

Identify the parts of a clam: gill

Molluscan Classes Specimens

• Monoplacophora (Neopilina)

• Polyplcophora (Chitons)

• Scaphapoda (tooth shells)

• Gastropoda (snails and slugs)

• Bivalvia (clams, oysters)

• Cephalopoda (octopi, squids)

Annelid Classes Specimens

• Polychaeta (sandworms)

• Oligocharta (earthworms)

• Hirudinea (leeches)

Anthropoda Classes Specimens

• Arachnida (spiders, scorpions)

• Crustacea (crabs, shrimps)

• Chilopoda (centipedes)

• Diplopoda (millipedes)

• Insecta (insects)

Cross section of an earthworm find the: setae

Cross section of an earthworm find the: ventral nerve cord

Cross section of an earthworm find the: intestinal cavity

Cross section of an earthworm find the: typhosole

Cross section of an earthworm find the: coelom

Cross section of an earthworm find the: dorsal blood vessel

Crayfish dissection identify: gills

Crayfish dissection identify: stomach

Crayfish dissection identify: heart

Crayfish dissection identify: brain

What species are apart of the phylum echinodermata

• asteroidea (sea stars)

• ophiuroidea (brittle stars)

• echinodea (sea urchins)

• Holothuroidea (sea cucumbers)

• Crinoidea (sea lillies)

What are the four distinguishing characteristics of chordates?

• phylum chordata

• dorsal, tubular nerve cord

• pharyngeal gill pouches or slits

• notochord

• postanal tail

What are some characteristics for tunicates?

• subphylum urochordata

• all chordate characteristics in the larva but not in adult

• filter feeders

What are some characteristics for lancelets?

• cephalochordata

• all chordate characteristics in adult

• poor swimmers (buried in mud)

• true head is lacking

• the cirri around the buccal cavity sweep sweater into the pharynx

On the cross section of the ampioxus find: nerve cord

On the cross section of the ampioxus find: notochord

On the cross section of the ampioxus find: buccal cavity

On the cross section of the ampioxus find: gill bars / slits (pharynx)

On the whole mount of the ampioxus find: nerve cord

On the whole mount of the ampioxus find: notochord

On the whole mount of the ampioxus find: myomeres

On the whole mount of the ampioxus find: gill bars

What are the characteristics of agnatha (jawless fish)?

no jaws, scaleless skin, cartilaginous endoskeleton, persistent notochord

What are the characteristics of chondrichthyes (cartilaginous fish)?

jaws, subterminal mouth, cartilaginous endoskeleton

What are the characteristics of osteichthyes (bony fish)?

jaws, terminal mouth, bony endoskeleton, operculum covers gills, swim bladder

What are the characteristics of amphibia (amphibians)?

aquatic larvae will gills, air breathing adults, scaleless skin, paired limbs, bony endoskeleton, 3 chambered heart

What are the characteristics of reptilia (reptiles)?

bony endoskeleton with rib cage, well developed lungs, claws, paired limbs in most, leathery shelled eggs, 3 chambered heart

What are the characteristics of aves (birds)?

wings, feathers, claws, rib cage, horn beak w/ no teeth, hard shelled eggs, 4 chamber heart

What are the characteristics of mammalia (mammals)?

hair, claws or nails, mammary glands, diaphragm, bony endoskeleton, young developed in utuerus, 4 chamber heart

Preserved lamprey: find the notochord

Preserved lamprey: find the nerve cord

Preserve lamprey: find the vertebrae

Slide of frog embryo cross section: find the spinal cord

Slide of frog embryo cross section: find the notochord

Slide of frog embryo cross section: find the gut

Slide of frog embryo cross section: find the coelom

Eye model: find the sclera

Eye model: find the cornea

Eye model: find the ciliary body

Eye model: find the iris

Eye model: find the retina

Eye model: find the lens

Human male reproduction: find the testes

Human male reproduction: find the epididymis

Human male reproduction: find the vasdeferens

Human male reproduction: find the seminal vesicles

Human male reproduction: find the ejaculatory ducts

Human male reproduction: find the prostate gland

Human male reproduction: find the bulbourethral glands

Human male reproduction: find the penis

Human male reproduction: find the urethra

Human female reproduction: find the cervix

Human female reproduction: find the clitoris

Human female reproduction: find the ovary

Human female reproduction: find the oviduct

Human female reproduction: find the urethra

Human female reproduction: find the uterus

Human female reproduction: find the vagina

Slide of mammal testis identify: seminiferous tubule

Slide of mammal testis identify: spermatozoa

Slide of mammal testis identify: interstitial cell

Slide of mammal ovary identify: germinal epithelium

Slide of mammal ovary identify: primary follicle

Slide of mammal ovary identify: secondary follicle

Slide of mammal ovary identify: graanfianfollicle

Fetal pig dissection find the: heart lung

Fetal pig dissection find the: diaphragm

Fetal pig dissection find the: liver

Fetal pig dissection find the: esophagus

Fetal pig dissection find the: stomach

Fetal pig dissection find the: colon