Atlas of Animal Anatomy and Histology
Fishes (Osteichthyes)
Mounted carp skeleton
Skeleton of a bony fish after selective staining
External anatomy of the crucian
Inflexible tongue in the bottom of the mouth cavity
Histological sections of the scale-free fish skin (PAS)
Histological sections of the oral mucosa (Azan)
Sensory organs on the head: eye and nostril
The gills are visible under the lifted operculum
Branchiostegal membrane closes the gill slit during the first part of inhalation
The bony cycloid scales of crucian sit in the dermis covered with a very thin epidermis
The urogenital opening and the anus can be found near the base of the anal fin
The abdominal and pericardial cavity are separated by the transverse septum
Internal organs of the crucian after removal of the right body wall
The right branchial cavity with gill arches after removal of the right operculum
The right branchial cavity with four gill arches sticked together
Histological sections of fish gill (cross sections, Azan)
Histological sections of fish gill (cross sections, tri-PAS)
Histological sections of fish gill (cross sections, tri-PAS)
Histological sections of fish gill (cross sections, tri-PAS)
The two windows to be connected by the removal of the pectoral fin
Pericardial cavity after removal of the pectoral fin and its suspensory girdle
Lateral view of the heart (parietal wall of the pericardium is removed)
The ventral aorta gives off four pairs of afferent arteries to the gill arches
Pericardial cavity after removal of the pectoral fin and its suspensory girdle
The gonadal (ovarian) artery entering the gonad (ovary)
Right hand view of the internal organs of the crucian
The closed pneumatic duct extends between the alimentary canal and swim-bladder
The gas gland in the anterior ventral wall of the posterior part the swim-bladder
The gall bladder and the bile duct
The hind-gut running to the anus and the gonadal duct and the ureter leading to the urogenital pore
Branches of the celiac artery and the vagus nerve
The spleen between the gonads and the lobes of the liver
Paired kidneys and the main blood vessels at the dorsal body wall
Histological section of fish kidney (HE)
The posterior Weberian ossicle connecting the swim bladder
Posterior cut surface of the detached head
The brain lurking in the loose fatty connective tissue after opening the skull
Dorsal view of the brain of the crucian in the skull after removal of the loose fatty tissue
Dorsal view of the right eyeball in its original position in the orbit
The ventral side of the right eyeball lifted up from the orbit
Cranial nerves of the crucian
The six extrinsic eye muscles on the rear view of the isolated right eyeball
Cross section of the crucian’s eye along the vertical midline. Note the spherical lens