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Funnel or siphon Funnel retractor muscle Gill Penis Sperm duct
Cecum Gill or branchial heart Gill Rectum Systemic heart
Male Squid
Female Squid
Ovary with eggs Nidamental Gland
Funnel retractor muscle Funnel or siphon Chromatophores (Pigment cells)
Gill Cecum
Gill (Branchial) Heart
Gill (Branchial) Heart Systemic Heart
Medial mantle artery
Lateral Mantle Artery
Male Squid
Caudal Aorta Testis Stellate ganglion
Gill Funnel or siphon
Cecum
Testis Penis
Gill
Gill
Systemic Heart
Gill (Branchial) Heart
Gill Heart
Caudal Aorta
Medial Mantle Artery
Funnel or Siphon
Stellate ganglion
Male Squid
Answers A. Cecum B. Lateral mantle artery C. Medial mantle artery D. Gill (Branchial) heart E. Systemic heart F. Gill G. Testis H. Caudal aorta I. Penis J. Stellate ganglion
Left gill (branchial) heart pumps low O2 blood to the gills
Afferent gill blood vessel transports low O2 blood to from gill heart to gills.
Efferent gill blood vessel transports high O2 blood to systemic heart.
Systemic heart
Caudal aorta
Right lateral mantle artery
Gill
Note that I removed the right gill (branchial) heart
Left gill (bracnhial) heart
Systemic heart Caudal aorta
Lateral mantle artery
Gill
Note that I removed the right gill (branchial) heart.
Right lateral mantle artery Caudal aorta Systemic heart
Left lateral mantle artery
Left gill (branchial) heart