Lab 10 Grasshopper Dissection Anatomy

Compound eyes

Provide wide-angle vision and detect movement E

Ocellus

Detect light intensity; help with balance and orientation E

Antennae

Sense touch, smell, vibrations, and air movement E

Mouthparts

Chew and grind plant material E

Wings

Enable flight; forewings protect hindwings E

Tympanum

Hearing organ that detects sound vibrations E

Spiracles

Openings that allow oxygen to enter and carbon dioxide to exit E

Ovipositor (biological females)

Used to lay eggs in soil E

Esophagus

Transports food from mouth to crop I

Crop

Temporarily stores food I

Stomach

Digests food and absorbs nutrients I

Gastric ceca

Release digestive enzymes and increase absorption I

Intestine and rectum

Absorb water and compact waste I

Anus

Eliminates solid waste I

Ovaries

Produce eggs I

Testes

Produce sperm I

Heart (dorsal blood vessel) may not see this

Circulates hemolymph through the body (may not be visible) I

Malpighian tubules

Remove metabolic wastes and regulate water balance I

Brain may not see this

Controls behavior and sensory processing (may not be visible) I

Ventral nerve cord

Transmits nerve signals and controls movement I