Across
- 3. the process of breaking down food by mechanical and enzymatic action in the alimentary canal into substances that can be used by the body.
- 6. metamorphosis a process undergone by certain insects whereby the young hatch in the adult form though they lack mature sexual organs and there is no pupal stage
- 7. an animal that feeds on plants
- 8. an insect in its inactive immature form between larva and adult
- 10. system the system that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic vessels and glands.
- 15. classical mechanics as a force multiplied by the amount of time it acts over.
- 16. system The central nervous system is that part of the nervous system that consists of the brain and spinal cord.
- 19. a free-swimming sexual form of a coelenterate
- 20. a mythological spirit of nature imagined as a beautiful maiden inhabiting rivers, woods, or other locations
- 21. the tailed aquatic larva of an amphibian (frog, toad, newt, or salamander), breathing through gills and lacking legs until the later stages of its development.
- 22. neuron a neuron that passes from the central nervous system or a ganglion toward or to a muscle and conducts a nerve impulse that causes movement
- 24. bladder a gas-filled sac present in the body of many bony fishes, used to maintain and control buoyancy.
- 28. egg an egg covered by an almost impervious shell which protects it and isolates it from the environment but is sufficiently porous to allow gas transfer
- 29. respiration process through which cells convert sugars into energy.
- 30. system The system of organs responsible for getting food into and out of the body and for making use of food to keep the body healthy.
- 31. feeder obtains its food by filtering organic matter or minute organisms from a current of water that passes through some part of its system.
- 32. a point where two or more bones are connected in a human skeletal system.
- 33. a neuron that conveys impulses from one neuron to another. — called also association neuron, associative neuron, internuncial, internuncial neuron.
- 35. period the period during which an embryo develops
- 36. fertilization The act or process of initiating biological reproduction by insemination or pollination
- 37. the active immature form of an insect, especially one that differs greatly from the adult and forms the stage between egg and pupa, e.g. a caterpillar or grub.
Down
- 1. Metamorphosis refers to change in anatomical and physiological form through a series of life stages.
- 2. an animal that feeds on flesh.
- 4. a flattened circular organ in the uterus of pregnant eutherian mammals, nourishing and maintaining the fetus through the umbilical cord.
- 5. Neuron transmits information about changes in the internal and external environment to the central nervous system.
- 9. a solitary or colonial sedentary form of a coelenterate
- 11. system series of organs responsible for taking in oxygen and expelling carbon dioxide.
- 12. physical process that refers to the net movement of molecules from a region of high concentration to one of lower concentration
- 13. the process of transformation from an immature form to an adult form in two or more distinct stages
- 14. An object, event, or a factor capable of inciting a physiological response.
- 17. an animal or person that eats food of both plant and animal origin.
- 18. elastic tissue that composes most of the skeleton of vertebrate embryos and except for a small number of structures
- 20. Neurons typically consist of a cell body, which contains a nucleus and receives incoming nerve impulses, and an axon, which carries impulses away from the cell body.
- 22. A muscle consists of many muscle tissues bundled together and surrounded by epimysium, a tough connective tissue similar to cartilage.
- 23. The shedding or casting off of an outer layer or covering and the formation of its replacement.
- 25. a bodily process occurring due to the effect of some antecedent stimulus or agent; "a bad reaction to the medicine
- 26. A brain is an organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals.
- 27. vascular system a network of water vessels in the body, the tube feet being operated by hydraulic pressure within the vessels.
- 34. fertilization mode of reproduction in which a male organism's sperm fertilizes a female organism's egg outside of the female's body.