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BIOLOGY > Dissection of Cockroach > Flashcards

Dissection of Cockroach Flashcards

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1
Q

what chemical is used to immobilize cockroaches?

A

chloroform

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2
Q

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

A

ventral

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3
Q

how many pairs of LEGS and WINGS do cockroaches have?

A

3 pairs of legs
2 pairs of wings

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4
Q

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

A

Yeager’s solution

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5
Q

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

A

pronotum

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6
Q

what side of cockroach can u find the circulatory system?

A

dorsal side

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7
Q

what side of cockroach can u find the nervous system?

A

ventral side

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8
Q

what are the 2 pair wings of a cockroach?

A

tegmina (1st pair - protects the hind wings)

membranous wing (2nd pair - protected for flight)

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9
Q

what do female cockroaches lack?

and what do they have that males lack?

A

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

vulva found between the anus of females

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10
Q

what are the 3 pair legs of a cockroach?

A

1st
2nd
3rd

walking legs

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11
Q

what do cockroaches use for biting?

A

mandible

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12
Q

ANAL CERCI vs ANAL STYLE

A

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

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13
Q

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

A

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

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14
Q

3 regions of the digestive system

A
  1. Foregut
  2. Midgut
  3. Hindgut
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15
Q

ORGANS under foregut (4)

A
  1. Esophagus
  2. Salivary Gland
  3. Crop
  4. Gizzard
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16
Q

FOREGUT ORGANS

produces saliva

A

salivary gland

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17
Q

FOREGUT ORGANS

connects the mouth to the crop

A

esophagus

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18
Q

FOREGUT ORGANS

storage organ for food before further digestion

A

crop

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19
Q

FOREGUT ORGANS

grinds food for further digestion after crop

A

gizzard (proventriculus)

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20
Q

FOREGUT ORGANS

gizzard has ____ teeth?

A

chitinous

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21
Q

FOREGUT ORGANS

like a black ball after crop

A

gizzard (proventriculus)

22
Q

ORGANS under midgut (2)

A

gastric caeca
mesentron

23
Q

MIDGUT ORGANS

finger-like projections that produce digestive enzymes

A

gastric caeca

24
Q

MIDGUT ORGANS

aid in nutrient absoroption

A

gastric caeca

25
Q

MIDGUT ORGANS

primary site for digestion and absoroption

A

mesentron (ventriculus)

26
Q

Other name for hindgut

A

proctodaeum

27
Q

MALPIGHIAN TUBULES vs GASTRIC CAECA

A

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

28
Q

ORGANS under hindgut (4)

A
  1. Ileum
  2. Colon
  3. Rectum
  4. Anus
29
Q

HINDGUT ORGANS

absorption of water and salt and found after Malpighian Tubules

A

Ileum

30
Q

HINDGUT ORGANS

further absorbs water and packs undigested food

A

Colon (black)

31
Q

HINDGUT ORGANS

waste storage

A

rectum

32
Q

HINDGUT ORGANS

exit point of waste materials

A

anus

33
Q

SOLE organ in excretory system of cockroaches and function

A

Malpighian Tubules (filter nitrogenous wastes and solutes from HEMOLYMPH)

34
Q

Fluid equivalent to blood in most invertebrates

A

Hemolymph

35
Q

TYPE of circulatory system found in invertebrates

A

Open Circulatory System (no vessels)

36
Q

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

A

cavities

37
Q

ORGANS under circulatory system (4)

A
  1. Pericardial hemocoel
  2. Heart
  3. Alary Muscles
  4. Ostia
38
Q

CIRCULATORY ORGANS

cavities that contains the hemolymph

A

pericardial hemocoel

39
Q

CIRCULATORY ORGANS

pumps hemolymph to the body

A

heart

40
Q

how many chambers does a cockroach’s heart have?

where does hemolymph first enter?

A

13

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

41
Q

CIRCULATORY ORGANS

attached to the heart that regulates hemolymph flow

A

alary muscles (fan-like structures)

42
Q

CIRCULATORY ORGANS

lateral openings w valves that prevent backflow

A

ostia

43
Q

ORGANS under nervous system (6)

A
  1. cerebral ganglion (brain)
  2. nerve cords
  3. thoracic ganglia
  4. thoracic nerves
  5. abdominal ganglia
  6. abdominal nerves
44
Q

Where can the cerebral ganglion be found?

A

inside the head

45
Q

NERVOUS ORGANS

occurs in pairs and run along the length of the body

A

nerve cords

46
Q

NERVOUS ORGANS

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

A

thoracic ganglia

47
Q

NERVOUS ORGANS

responsible for movement of legs and wings

A

thoracic ganglia

48
Q

NERVOUS ORGANS

nerves that branch from the thoracic ganglia

A

thoracic nerves

49
Q

NERVOUS ORGANS

located along the abdomen for control of abdominal muscles

A

abdominal ganglia

50
Q

NERVOUS ORGANS

supports locomotion and digestion

A

abdominal ganglia

51
Q

NERVOUS ORGANS

nerves that branch from the abdominal ganglia

A

abdominal nerves

BIOLOGY (18 decks)

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