CRAYFISH DISSECTION
INTEGUMENTARY/SKELETAL EXOSKELETON CARAPACE (EXOSKELETON THAT COVERS CEPHALOTHORAX) MOLTING
RESPIRATORY SYSTEM
RESPIRATORY SYSTEM PRINCIPLE OF DIFFUSION GOING FROM AN AREA OF HIGH CONCENTRATION TO LOW CONCENTRATION
CIRCULATORY SYSTEM
CIRCULATORY SYSTEM FUNCTION: TO CARRY OXYGEN TO THE TISSUES AND CARRY CELLULAR WASTE AND CARBON DIOXIDE AWAY. OPEN CIRCULATORY SYSTEM: NO VEINS HERE!!!!!!!!!!!!!!!!!
CIRCULATORY SYSTEM
DIGESTIVE SYSTEM
DIGESTIVE SYSTEM MOUTH--------ESOPHAGUS------ CARDIAC STOMACH-------PYLORIC STOMACH---------INTESTINE---ANUS ENZYMES PRODUCED BY DIGESTIVE GLAND. ABSORBED BY DIGESTIVE GLAND
DIGESTIVE SYSTEM TAKE STOMACH OUT AND LOOK AT TEETH INSIDE THE CARDIAC STOMACH. CALLED THE GASTRIC MILL
REPRODUCTIVE SYTEM MALE? LOOK FOR TESTES UNDERNEATH THE HEART. BE CAREFUL THEY ARE SMALL! FEMALE? LOOK FOR OVARIES UNDERNEATH THE HEART.
REPRODUCTIVE SYSTEM DO YOU HAVE A MALE OR A FEMALE? LOOK AT BASE OF 5TH WALKING LEG FOR MALES. LOOK AT BASE OF 3RD WALKING LEG FOR FEMALES.
REPRODUCTIVE SYSTEM MALES TRANSFER SPERM BY SWIMMERETS TO FEMALE’S SEMINAL RECEPTACLE. FIND THIS ANTERIOR TO FIRST PAIR OF SWIMMERETS.
REPRODUCTIVE SYSTEM FEMALES HOLD SPERM ALL WINTER. RELEASE EGGS AND SPERM DURING SPRING. EXTERNAL FERTILIZATION.
REPRODUCTIVE SYSTEM
REPRODUCTIVE SYSTEM
EXCRETORY SYSTEM
EXCRETORY SYSTEM GETTING RID OF EXCESS WATER LIVE IN HYPOTONIC ENVIRONMENT GETTING RID OF NITROGEN WASTE EXITS THROUGH PORE AT BASE OF ANTENNAE
NERVOUS SYSTEM
NERVOUS SYSTEM BRAIN (GANGLIA) NERVE CORDS ENCIRCLE ESOPHAGUS VENTRAL NERVE CORD GANGLIA CONTROL EACH SEGMENT
MUSCULAR SYSTEM ADDUCTOR MUSCLES TO MOVE MANDIBLE. MUSCLES INSIDE CHELIPED FLEXOR/EXTENSOR MUSCLES OF ABDOMEN
MUSCULAR SYSTEM
PARTS YOU SHOULD KNOW ANTERIOR POSTERIOR VENTRAL DORSAL CEPHALOTHORAX ABDOMEN CARAPACE EXOSKELETON CHELIPED ROSTRUM COMPOUND EYES ANTENNAE ANTENNULES WALKING LEGS
PARTS YOU SHOULD KNOW SWIMMERETS TELSON UROPODS MANDIBLE MAXILLAE MAXILLIPEDS MALE/FEMALE GILLS SEMINAL RECEPTACLE NAUPLIUS TESTES OVARIES HEART OSTIA
PARTS YOU SHOULD KNOW ARTERIES PYLORIC STOMACH CARDIAC STOMACH INTESTINE DIGESTIVE GLAND GREEN GLANDS ADDUCTOR MUSCLES ABDOMINAL MUSCLES VENTRAL NERVE CORD GASTRIC MILL