Across
- 2. The basic building blocks of all living things.
- 3. Organ system consisting of skeletal, smooth, and cardiac muscle. It permits movement of the body, maintains posture, and circulates blood throughout the body.
- 6. A passive biological system that removes excess, unnecessary materials from the body fluids of an organism.
- 7. Consists of the gastrointestinal tract plus the accessory organs of digestion.
- 8. A messenger system comprising feedback loops of the hormones released by internal glands of an organism directly into the circulatory system
- 9. A complex network of cells, tissues, organs, and the substances they make that helps the body fight infections and other diseases.
Down
- 1. the system that circulates blood and lymph through the body, consisting of the heart, blood vessels, blood, lymph, and the lymphatic vessels and glands.
- 4. the set of organs forming the outermost layer of an animal's body. It comprises the skin and its appendages, acting as a physical barrier between the external environment and the internal environment that it serves to protect and maintain the body of the animal.
- 5. The classical doctrine of the nervous system determines that it is a highly complex part of an animal that coordinates its actions and sensory information by transmitting signals to and from different parts of its body.
- 7. Polymer composed of two polynucleotide chains that coil around each other to form a double helix carrying genetic instructions for the development, functioning, growth and reproduction of all known organisms and many viruses.