organs & their functions

Question 1

mandibles

Answer 1

used for chewing food into small pieces

Question 2

maxillae

Answer 2

push food into oral cavity

Question 3

labium

Answer 3

acts as the floor of the oral cavity

Question 4

salivary gland

Answer 4

secretes digestive enzymes & lubricates food

Question 5

pharynx

Answer 5

pumps food into digestive system

Question 6

esophagus

Answer 6

transports food from head to abdomen

Question 7

crop

Answer 7

stores food

Question 8

proventriculus

Answer 8

grinds food

Question 9

midgut

Answer 9

secretes digestive enzymes, digests food, nutrient uptake

Question 10

hindgut

Answer 10

processes waste

Question 11

rectum

Answer 11

removal of water (located at the large intestines)

Question 12

gastric caeca

Answer 12

This refers to the pouches connected to the main alimentary canal at the junction of the proventriculus and the midgut. It’s a single layer of thick cells capable of absorbing nutrients.

Question 13

malpighian tubules

Answer 13

separate waste products from nutrients that are returned to the hemolymph, waste products travel through the tubes as urine. (like a kidney)

Question 14

fat body

Answer 14

primary metabolic cells, process nutrients, makes the yolk of eggs and performs numerous metabolic functions (like a human liver)

Question 15

spiracle

Answer 15

The exterior muscular valve in the respiratory system. When spiracles open, air can enter the trachea and carbon dioxide is released.

Question 16

trachea

Answer 16

distributes oxygen throughout the insect

Question 17

dorsal organ

Answer 17

pumps hemolymph from abdomen into the head

Question 18

hemolymph

Answer 18

insect blood

Question 19

antennae

Answer 19

used for smell

Question 20

tarsal claw

Answer 20

a “foot” used for clasping onto rough surfaces

Question 21

frass

Answer 21

insect waste product (basically what they poop)