Grasshopper dissection Flashcards
how is the outer exoskeleton divided
into armour-like plates
what are the thinner, flexible areas of the exoskeleton between the plates called
the articular membrane
three main regions the BODY is divided
- head
- thorax
- abdomen
what makes up the head
- antennae
- compound eye
- ocelli
what are the antennae
paired sensory appendages
compound eye
a complex eye on either side of the head
ocelli
three small simple eyes which are mostly used for light vs dark
what makes up the mouthparts
- labrum
- labium
- maxillae
- mandibles
- hypopharynx
the anterior mouthpart (like the upper lip)
labrum
unpaired lower lip
labium
paired structures for food manipulation with palps that are segmented to manipulate food and gather sensory info
maxillae
two massive jaws
mandibles
central, tongue-like structure
hypoparynx
what makes up the thorax
- prothorax
- mesothorax
- metathorax
anterior segment of the thorax that bears a pair of walking legs
prothorax
middle thoracic segment bearing a second pair of walking legs
mesothorax
posterior thoracic segment bearing large legs specialized for jumping
metathorax
describe the two types of wings of the grasshopper
- mesothoracic wings - leathery and the outermost wings
- metathoracic wings - membranous and underneath the mesothoracic wings
how many segments make up the abdomen
11 segments
what makes up the abdomen
- tympanum
- spiracles
distinct round section on first abdominal section functioned with hearing
tympanum
minute respiratory openings
spiracles
what makes up the external genitalia
- ovipositor
- cerci
found in both males and females; have a textile sensory function
cerci
to release mature eggs from inside the female body.
ovipositor
what makes up locomotion and respiration
- muscles
- tracheae
what are especially well developed in the legs and wings for movement
muscles
transparent, delicate respiratory tubes
trachaea
what makes up the digestive and excretory systems
- mouth
- esophagus
- crop
- digestive ceca
- intestine
- malpighian tubules
long threadlike tubules that surround the lower intestine and are the excretory organs of the grasshopper
malpighian tubules
extends from the stomach to the anus
intestine
anterior opening of the digestive system
mouth
short narrow tube extending from mouth to the digestive tract
esophagus
thin-walled sac for food storage
crop
projections posterior to the crop that enlarge the digestive and absorptive areas of the stomach
digestive ceca
what makes up the reproductive system in MALES
- testes
- vas deference
- ejaculatory duct
- accessory glands