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A&P 1 Introduction
Introduction to Anatomy and Physiology 1
| Question | Answer |
|---|---|
| -What is physiology and what does it attempt to explain? | Physiology is the study of function and attempts to explain how and why humans function. |
| -What is the reductionist order of a human being? | Organism->Organ System->Organ->Tissue->Cell->Organelle |
| -What is the basic unit of life? | The cell. |
| -How many cells does the average human body contain? | About 100 trillion, or 100,000,000,000,000. |
| -How many different types of cells are in the human body? | About two hundred. |
| -What are cells composed of? | Organelles and macromolecules such as proteins, lipids, carbohydrates and nucleic acids. |
| -What are organelles made of? | Proteins, lipids, carbohydrates and nucleic acids. |
| -Name the parts of a prototypical cell. | Microtubules, nucleus, Golgi complex, lysosomes, flagellum, plasma membrane, smooth endoplasmic reticulum, rough endoplasmic reticulum, ribosomes, cytosol, vesicles, centrioles, and mitochondria. |
| -What does the plasma membrane do? | It separates the cell exterior from the cell interior. |
| Describe the nucleus of a cell. | The nucleus is a membrane-bound structure that contains DNA, which is the set of instructions for the synthesis of the whole body's proteins. |
| -What does DNA stand for? | Deoxyribonucleic acid. |
| -Describe mitochondria. | Structures bound by a double membrane, mitochondria serve as the site where the energy stored in sugars and other organic molucules is transferred to ATP. |
| -Describe ribosomes. | Sites of protein synthesis, no membrane, may be free-floating or bound to the endoplasmic reticulum. |
| -Describe the Rough Endoplasmic Reticulum. | Membranous set of tubes with ribosomes studded along its surface. It's the site of the synthesis of proteins that will be exported from the cell. |
| -Describe the Smooth Endoplasmic Reticulum. | Endoplasmic reticulum without ribosomes. It's the site of cellular lipid synthesis. |
| -Describe the Golgi Apparatus. | It is responsible for determining the direction of proteins synthesized in the rough endoplasmic reticulum, and it has a membrane. |
| -Describe lysosomes. | It houses digestive enzymes that can be used to break down ingested toxins or worn down cell parts. It has a membrane. |
| -Define an enzyme. | A protein produced by a cell that is capable of breaking down organic compounds by catalytic action, such as digestion. |
| -Define an organ. | A structure made of two or more tissue types that performs a particular function. |
| -Define an organ system. | A group of organs with a unique collective function. |
| -How many organ systems are there in the human body? | Eleven. |
| -What are the structures of the Integumentary System? | Skin, hair, sweat glands and oil glands. |
| -What are the functions of the Integumentary System? | External body covering, vitamin D synthesis, preventing desiccation, heat loss and pathogen entry, sensing pain and pleasure. |
| -How many bones are in the human body? | Two hundred and six (206). |
| -What are the functions of the skeletal system? | Protect and support the body organs, provide a framework used by muscles to create movement, hemopoiesis and mineral storage. |
| -How many muscles are in the Muscular System? | More than 600. |
| -What are the functions of the Muscular System? | Locomotion, manipulation of the environment, maintaining posture and thermogenesis. |
| -What is hemopoiesis? | Production of blood cells. |
| -What is thermogenesis? | Generation of heat. |
| -What are the components of the nervous system? | The brain, spinal cord and peripheral nerves. |
| -What are the functions of the nervous system? | Fast-acting control of the body, monitoring the internal and external environment, responding to stimuli by initiating muscular or glandular activity. |
| -What are the components of the Endocrine System? | Hormone-secreting glands: pituitary, thyroid, thymus, pineal, parathyroid, adrenal, pancreas, small intestine, stomach, testes, ovaries, kidneys, heart. |
| -What are the main functions of the Endocrine System? | Regulating growth, reproduction and nutrient use. |
| -What are the structures of the Cardiovascular System? | The heart and blood vessels. |
| -What are the three types of blood vessel? | Arteries, veins and capillaries. |
| -What are the functions of the Cardiovascular System? | Pumping blood to the body, transporting nutrients (glucose, amino acids, lipids), gases (O2 and CO2), wastes (urea, creatinine), signaling molecules (hormones), and heat. |
| -What are the structures of the Lymphatic/Immune System? | Lymphatic vessels, lymph nodes, spleen, thymus, red bone marrow. |
| -What are the functions of the Lymphatic/Immune System? | Returning "leaked" fluid to the bloodstream, disposing of debris, attacking and resisting foreign invaders. |
| -What are the structures of the Respiratory System? | Nasal cavity, pharynx, trachea, bronchi, lungs. |
| -What are the functions of the Respiratory System? | Supply the blood with O2 and remove CO2, regulate the blood's pH level. |
| -What are the structures of the Digestive System? | Oral cavity, esophagus, stomach, small intestine, large intestine, rectum, salivary glands, pancreas, liver, gallbladder. |
| -What are the functions of the Digestive System? | Ingestion and breakdown of food into absorbable units. |
| -What are the structures of the Urinary System? | The kidneys, ureters, urinary bladder and urethra. |
| -What are the functions of the Urinary System? | Removal of nitrogenous waste, regulation of the body's levels of water, electrolytes and acidity. |
| -What are the structures of the Male Reproductive System? | Testes, scrotum, epididymis, vas deferens, urethra, prostate gland, seminal vesicles, penis. |
| -What are the structures of the Female Reproductive System? | Ovaries, uterine tube, uterus, cervix, vagina, mammary glands. |
| -What are the functions of the Reproductive System? | Production of offspring. |
| -Define emergent properties. | Properties of a whole that begin to exist (emerge) when individual parts combine to form the whole. |
| -Define homeostasis. | The body's ability to maintain stable internal conditions despite changing external conditions. |
| -Where are the sensory receptors for blood pressure located in the human body? | In the aorta arch and the carotid arteries. |
| -What are the carotid arteries? | The large vessels that bring blood to the brain. |
| -What part of the brain controls blood pressure? | The medulla oblongata. |
| -What is the afferent pathway? | The connection between the receptor and control center for blood pressure. |
| -What is an effector organ? | An organ to which a signal is sent by the brain to correct an issue. |
| -What is the efferent pathway? | The connection between the control center and the effector organ. |
| -Define Positive and Negative Feedback. | Positive Feedback is where the body respond in a way that augments a change. Negative Feedback is where the body responds in a way that counteracts the effects of a stimulus. |
| -Which is more common in the human body- Positive or Negative Feedback? | Negative Feedback. |
| -Give two examples of positive feedback in the human body. | Childbirth and blood clotting. |
| -What chemical causes uterine contractions and is produced in response to cervical stretching? | Oxytocin. |
| -What are the two divisions of body fluid? | Intracellular fluid (ICF) and Extracellular fluid (ECF). |
| -What are the two main types of ECF? | Interstitial fluid and blood. |
| -What is interstitial fluid? | The fluid that surrounds the cells, or tissue fluid. |
| -Define pathology. | The study of disease. |
| -Define embryology. | The study of how a zygote turns into a full-grown human. |
| -Define zygote. | A fertilized egg. |