CIRCULATORY SYSTEM

Question 1

The means for chemical exchange between different organs

Answer 1

circulatory system

Question 2

Blood of insect

Answer 2

haemolymph

Question 3

Body cavity for blood

Answer 3

hemocoele

Question 4

main organ of circulation lying at the top of the body cavity extending from the back of the abdomen to the head;

Answer 4

Dorsal vessel

Question 5

Primary circulatory pump

Answer 5

heart

Question 6

location of aorta

Answer 6

anterior: thorax and cephalic portion

Question 7

bands of wingshaped muscles bordering the heart below, connecting the heart to the lateral portions of the TERGA

Answer 7

alary muscles

Question 8

openings without valves but with spongiform cells

Answer 8

excurrent ostia

Question 9

the vertical openings which permit blood flow in the heart

Answer 9

incurrent ostia

Question 10

cells that expand during contraction so that blood can pass out of the vessel

Answer 10

Spongiform cells

Question 11

actual recording of the contraction and relaxation phases of the heart

Answer 11

heart beat

Question 12

intrinsic characteristic of heart muscles

Answer 12

they are myogenic

Question 13

parts of heart beat

Answer 13

diastole 1
diastole 2 - from alary muscles
systole - contraction of heart beat due to contraction of heart mucles

Question 14

tube that carries blood forward in to the head capsule
lacks muscles

Answer 14

aorta

Question 15

accessory pulsatile organ in the mesothorax that draw blood throughout the wings

Answer 15

thoracic pulsatile organ

Question 16

accessory pulsatile organ that guide flow of blood back and to the sides

Answer 16

ventral diaphragm

Question 17

type of dv without segmental swellings

Answer 17

straight tube

Question 18

type of dv that have a series of large segmentally arreanged bubous structure

Answer 18

dilatations

Question 19

type of dv that may have cephalic tubular extensions

Answer 19

tubular extensions

Question 20

list innervations that supply the heart

Answer 20

-recurrent nerve - ganglia of ventral nerve cord

-stomogastric nerve system - via occipital and ingluvial ganglionic nerves

-esophageal nerves

Question 21

usual color of insects blood

Answer 21

white, yellow and green

Question 22

compostion of insects blood

Answer 22

liquid plasma 90
hemocytes 10

Question 23

prevents freezing of insects blood

Answer 23

ribulose and trehalose/glycerol

Question 24

properties of haemolymph

Answer 24

ph 6-8
16-20% of the total body weight
specific gravity of 1.012 - 1.03
do not contain hemoglobin

Question 25

roles of blood in insects

Answer 25

• transport and absorb nutrients from the digestive system
• absorb metabolic waste
• transport hormones
  *detoxify, lessen infection, produce distasteful compounds
• convert substances
• hydraulic function during molting and growth
• thermoregulation

Question 26

how does blood circulate

Answer 26

heart - aorta - head - bathes organs - percolates to alimentary canal to abdomen - recycled by the heart

Question 27

muscles that aid in blood flow to appendages

Answer 27

longitudinal muscles (septa)

Question 28

aid in circulating blood thru the wing veins

Answer 28

thoracic pulsatile organs

Question 29

sinus that facilitates circulation in the legs and antennae

Answer 29

perineural sinus

Question 30

sinus that facilitates circulation in all organs

Answer 30

perivisceral sinus

Question 31

sinus accessory pulsatile organs that acts as siphon

Answer 31

pericardial sinus

Question 32

partition between the heart and the body cavity

Answer 32

dorsal diaphragm

Question 33

covers the nerve cord (periisceral / perineural sinus)

Answer 33

ventral diaphragm

Question 34

Large cells scattered along the DV and alary muscles serving as major site for metabolism of unwanted CHON from blood

Answer 34

pericardial cells and other nephrocytes

Question 35

loose meshwork of lobes invested in connective tissue and consists of adiphocytes serving for intermediary metabolism of protein, also CHO and fat metabolism

Answer 35

fat body

Question 36

Found underneath epidermis and are the large cells that produce constituents of the cuticle (lipoprotein); for intermediary metabolism of CHO, CHON and fat

Answer 36

oenocytes