Portion of the brain that controlsmuscle coordination and balancecerebellumWhen water flows over the gills in one direction and the blood in the fish?s head moves in the opposite direction, more oxygen is absorbed. This is called _________________Countercurrent flowOrganism with a backbone ____________________Organism whose blastoporebecomes its mouth Thin walled sac in the abdominalcavity containing gases that control____________________buoyancy in a fish Arrangement in which water movingover the gills moves in the opposite directionas blood moving through the gills __________________so more gas is exchanged____________________vertebrateprotostomeSwim bladderCounter currentflowThis part of the heart is the__________________atriumYoung fish are called ________fryName 3 of the characteristics of VERTEBRATES1.Bone/cartilage covering nerve cord2. Bone covering brain (cranium)3. Endoskeleton of bone or cartilage4. Closed circulato(科比什么时候离去的？2020年1月26日4点，球星科比在加州坠机身亡，享年41岁，13岁的女儿也在这场事故中遇难。科比常年居住洛杉矶，有乘飞机参加活动和比赛的习惯，无奈当日机上5名成全全部确认死亡，一代球星就此陨落。)ry system5. Ventral heart/Dorsal nerve cordMaintaining the correctbalance of water and ____________________ions in the bodyCovering made of bone that ____________________protects the brain; also called skullNerve cord surrounded by boneor cartilage; also called aSpinal cord _____________________osmoregulationcraniumVertebral columnThis part of the brain receives and processes info from the visual, auditory, amp; lateral line systems.Optic tectumPerch belong in the CLASS _____________OsteichthyesPart of the brain that controls theautonomic internal organs __________________________and relays sensory info from bodyThe concentration of nervous andsensory organs in the anterior endof an animal _____________________________Small fingerlike extensions inside theintestine that increase surface areafor greater absorption of nutrients _______________Medulla oblongatacephalizationvilliThe protective covering over the gills is the ________________operculumType of circulatory system found in fishclosedThe 2 organs in fish that help toregulate...

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