Dissection of Cockroach

Question 1

what chemical is used to immobilize cockroaches?

Answer 1

chloroform

Question 2

what side of a cockroach is UP upon start of dissection (yung nakaharap sayo)

Answer 2

ventral

Question 3

how many pairs of LEGS and WINGS do cockroaches have?

Answer 3

3 pairs of legs
2 pairs of wings

Question 4

what solution is commonly poured on a cockroach to prevent its organs from drying out?

Answer 4

Yeager’s solution

Question 5

what part of the cockroach will you pin at the start to still the insect?

Answer 5

pronotum

Question 6

what side of cockroach can u find the circulatory system?

Answer 6

dorsal side

Question 7

what side of cockroach can u find the nervous system?

Answer 7

ventral side

Question 8

what are the 2 pair wings of a cockroach?

Answer 8

tegmina (1st pair - protects the hind wings)

membranous wing (2nd pair - protected for flight)

Question 9

what do female cockroaches lack?

and what do they have that males lack?

Answer 9

anal styles (horn-like structures that arise from the anus)

vulva found between the anus of females

Question 10

what are the 3 pair legs of a cockroach?

Answer 10

1st
2nd
3rd

walking legs

Question 11

what do cockroaches use for biting?

Answer 11

mandible

Question 12

ANAL CERCI vs ANAL STYLE

Answer 12

Anal cerci are found in both males and females and horn-like structures din sila na more outward and longer than styles.

Question 13

what do you call the three segments that make up the thorax of an insect

Answer 13

prothorax (anterior segment)
mesothorax (middle segment)
metathorax (posterior segment)

Question 14

3 regions of the digestive system

Answer 14

1. Foregut
2. Midgut
3. Hindgut

Question 15

ORGANS under foregut (4)

Answer 15

1. Esophagus
2. Salivary Gland
3. Crop
4. Gizzard

Question 16

FOREGUT ORGANS

produces saliva

Answer 16

salivary gland

Question 17

FOREGUT ORGANS

connects the mouth to the crop

Answer 17

esophagus

Question 18

FOREGUT ORGANS

storage organ for food before further digestion

Answer 18

crop

Question 19

FOREGUT ORGANS

grinds food for further digestion after crop

Answer 19

gizzard (proventriculus)

Question 20

FOREGUT ORGANS

gizzard has ____ teeth?

Answer 20

chitinous

Question 21

FOREGUT ORGANS

like a black ball after crop

Answer 21

gizzard (proventriculus)

Question 22

ORGANS under midgut (2)

Answer 22

gastric caeca
mesentron

Question 23

MIDGUT ORGANS

finger-like projections that produce digestive enzymes

Answer 23

gastric caeca

Question 24

MIDGUT ORGANS

aid in nutrient absoroption

Answer 24

gastric caeca

Question 25

MIDGUT ORGANS primary site for digestion and absoroption

Answer 25

mesentron (ventriculus)

Question 26

Other name for hindgut

Answer 26

proctodaeum

Question 27

MALPIGHIAN TUBULES vs GASTRIC CAECA

Answer 27

MT (yellow) are thinner and more numerous than GC (white)

Question 28

ORGANS under hindgut (4)

Answer 28

1. Ileum 2. Colon 3. Rectum 4. Anus

Question 29

HINDGUT ORGANS absorption of water and salt and found after Malpighian Tubules

Answer 29

Ileum

Question 30

HINDGUT ORGANS further absorbs water and packs undigested food

Answer 30

Colon (black)

Question 31

HINDGUT ORGANS waste storage

Answer 31

rectum

Question 32

HINDGUT ORGANS exit point of waste materials

Answer 32

anus

Question 33

SOLE organ in excretory system of cockroaches and function

Answer 33

Malpighian Tubules (filter nitrogenous wastes and solutes from HEMOLYMPH)

Question 34

Fluid equivalent to blood in most invertebrates

Answer 34

Hemolymph

Question 35

TYPE of circulatory system found in invertebrates

Answer 35

Open Circulatory System (no vessels)

Question 36

Instead of vessels, where does fluid flow (hemolymph)?

Answer 36

cavities

Question 37

ORGANS under circulatory system (4)

Answer 37

1. Pericardial hemocoel 2. Heart 3. Alary Muscles 4. Ostia

Question 38

CIRCULATORY ORGANS cavities that contains the hemolymph

Answer 38

pericardial hemocoel

Question 39

CIRCULATORY ORGANS pumps hemolymph to the body

Answer 39

heart

Question 40

how many chambers does a cockroach's heart have? where does hemolymph first enter?

Answer 40

13 from the posterior (13th) to anterior (1st)

Question 41

CIRCULATORY ORGANS attached to the heart that regulates hemolymph flow

Answer 41

alary muscles (fan-like structures)

Question 42

CIRCULATORY ORGANS lateral openings w valves that prevent backflow

Answer 42

ostia

Question 43

ORGANS under nervous system (6)

Answer 43

1. cerebral ganglion (brain) 2. nerve cords 3. thoracic ganglia 4. thoracic nerves 5. abdominal ganglia 6. abdominal nerves

Question 44

Where can the cerebral ganglion be found?

Answer 44

inside the head

Question 45

NERVOUS ORGANS occurs in pairs and run along the length of the body

Answer 45

nerve cords

Question 46

NERVOUS ORGANS located in the thorax that look like 2 balls at the anterior of the cockroach

Answer 46

thoracic ganglia

Question 47

NERVOUS ORGANS responsible for movement of legs and wings

Answer 47

thoracic ganglia

Question 48

NERVOUS ORGANS nerves that branch from the thoracic ganglia

Answer 48

thoracic nerves

Question 49

NERVOUS ORGANS located along the abdomen for control of abdominal muscles

Answer 49

abdominal ganglia

Question 50

NERVOUS ORGANS supports locomotion and digestion

Answer 50

abdominal ganglia

Question 51

NERVOUS ORGANS nerves that branch from the abdominal ganglia

Answer 51

abdominal nerves