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BIO 253 Exam 1 Questions And Answers With Verified Solutions
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BIO 253 Exam 1 Questions And Answers With Verified Solutions
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BIO 253 Exam 1 Questions And Answers With Verified Solutions Organism Hierarchy Correct Answer: Atom, molecules (macromolecules), cells, tissues, organs, organ systems, organism 11 Major Human Body Systems Correct Answer: Muscular Endocrine Nervous Cardiovascular Lymphatic Integumentary Skeletal Digestive Urinary Reproductive Respiratory Integumentary System Correct Answer: Skin, Hair, and Nails Protects deeper tissue from injury and dehydration Allows for feeling of heat and pressure Skin forms Vitamin D Skeletal System Correct Answer: Bones, Joints, and their Cartilage Supports against gravity and forms framework Helps in movement Skeletal tissues produce blood cells and store minerals Muscular System Correct Answer: Various Skeletal Muscles Produce body movements Stabilize body position Contractions help generate body heat Nervous System Correct Answer: Brain, Spinal Cord, Nerves Specialized organs such as eyes Allows control and regulation of body functions Responds to environmental changes Endocrine System Correct Answer: Glands secrete hormones Regulates body functions Slower than nervous system but effects last longer Cardiovascular System Correct Answer: Blood, Heart, Arteries, Veins, and Capillaries Heart pumps blood that transports materials for the body Oxygen, nutrients, metabolic waste Specialized cells and proteins fight against disease Lymphatic System Correct Answer: Consists of Lymph (fluid tissue) that travels through vessels Returns excess tissue fluid to the cardiovascular system Transports materials through the body Primary role is defense against disease Digestive System Correct Answer: Gastrointestinal Tract (alimentary canal) Contains and transports food Processes food into molecules that the blood can transport Provides body nutrients Eliminated indigestible wastes Urinary System Correct Answer: Kidneys, Ureters, Urinary Bladder, Uterus Kidneys filter metabolic wastes from blood (produce urine) Regulates chemical content of blood Respiratory Sytem Correct Answer: Lungs and Air Passages to and from Lungs Lungs absorb oxygen into the blood for Cellular Respiration Lungs remove carbon dioxide from blood and expel Maintains acid/base balance of blood Produces speech Reproductive System Correct Answer: Gonads, Tubes that Transpo rt Gametes Produce sex hormones that regulate body development Reproductive Process Gonads produce Gametes Females support developing offspring Major Features of all Living Organisms Correct Answer: Metabolism - chemically process materials to generate ene rgy Stimuli - they are responsive to their environments Movement Grow and Develop over Time Differentiation - body cells become specialized Reproduce - cells reproduce, not necessarily the organism 3 Components of Feedback System Correct Answer: Receptor - detects change in environment, generates impulse Control Center - (usually the brain) receives the impulse and makes a decision, then sends another impulse Effector - receives Control Center's impulse (usually a gland or muscle) and takes action to restore body conditions to normal Negative Feedback Correct Answer: Opposes a change in body conditions Restores conditions to Set PointThe benefits of buying summaries with Stuvia:
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