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108 Cards in this Set
- Front
- Back
- 3rd side (hint)
Anatomy |
Structure of the body |
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Physiology |
The function of the body |
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Homeostasis |
The state of balance in your body |
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Surface anatomy |
The study of general form and superficial markings |
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Regional anatomy |
Focuses on the anatomical organization of specific areas of the body, such as head, neck, or trunk. |
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Systematic anatomy |
The study of the structure of organsystems |
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Clinical anatomy |
Subspecialties in an important clinical practice |
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Developmental anatomy |
Describes the changes in form that take place between conception and adulthood. |
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Embryology |
The study of early developmental processes (during the first two months) |
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Cytology |
The study of the internal structure of individual cells. |
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Histology |
The examination of tissues |
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Cells |
The simplest units of life. |
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Tissues |
Groups of specialized cells and cell products that work together to perform specific functions |
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Pathology |
Study of disease |
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Signs (displays signs of fever) |
An objective disease indications like a fever |
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Symptoms (patient display symptoms of fever) |
A subjective disease indications such as tiredness |
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Atoms |
The smallest stable units of matter |
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System levels in order |
Cell Tissue Organ Organ system Organism |
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Part 1 of Homeostasis regulation |
Autoregulation: process that occurs when a cell, a tissue, an organ, or an organ system adjusts in response to some environmental change. |
Example when oxygen levels decline in a tissue, the cells release chemicals that widen, or dilate, blood vessels. |
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Extrinsic regulation |
There is a process that results from the activities of the nervous system and endocrine system. These organ systems detect environmental change and send an electrical signal nervous system for chemical messenger endocrine system to control or adjust the activities of another or many other systems simultaneously |
When you exercise your nervous system issues commands that increase your heart rate so that blood will circulate faster your nervous system also reduces blood flow to less active organs such as the digestive tract the oxygen in circulating blood is it available to the active muscles which need it most |
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What does the nervous system do? |
The nervous system directs rapid short-term and very specific responses. |
For example when you touch a hot stove the heat produces a painful localized disturbance of homeostasis and your nervous systems response they ordering specific muscles to contract and pull away from the stove |
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What does the endocrine system do? |
The endocrine system releases chemical Messengers called hormones into the bloodstream |
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Hormones |
Hormones are molecular Messengers that can affect tissues and organs throughout the body |
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What are the three parts of homeostatic regulatory mechanisms? |
1. Receptor a) a receptor is a sensor that is sensitive to a particular stimulus or environmental change 2. Control center a) the control Centre receives and processes information supplied by the receptor and sends out commands 3. Effector a) an effector is a cell or organ that responds to the commands of the control center and whose activity either opposes or enhances the stimulus. |
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Set point |
Desired value |
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Integumentary |
Major organs
Skin, hair, sweat glands,
FUNCTIONS
1) Protects against environmental hazards, 2) helps regulate body temperature, 3)provide sensory information
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Skeletal system |
Major organs
Bones, cartilage, associated ligaments, bone marrow
FUNCTIONS 1)Provides support and protection for other tissues, 2) stores calcium and other minerals, 3) forms blood cells |
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Muscular |
Major organs skeletal muscles and associated tendons FUNCTIONS 1) provides movement 2) provides protection and support for other tissues 3) generates heat that maintains body temperature |
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Nervous system |
Major Organs Brain, spinal cord, peripheral nerves, sense organs FUNCTIONS 1) directs immediate responses to stimuli 2) coordinates or moderates activities of other organ systems 3) provides and interprets sensory information about external conditions |
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Endocrine system |
Major organs Pituitary gland, thyroid gland, pancreas, adrenal gland, gonads, endocrone tissues in other systems FUNCTIONS 1) direct long-term changes in the activities of other organ systems 2) adjusts metabolic activity and energy used by the body 3) controls many structural and functional changes during development |
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Cardiovascular System |
Major organs Heart, blood, blood vessels FUNCTIONS 1) distributes blood cells, water and dissolved materials including nutrients, waste products, oxygen, and carbon dioxide 2) distributes heat and assists in control of body temperature |
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Lymphatic System |
Major organs Spleen, thymus, lymphatic vessels, lymph nodes, and tonsils FUNCTIONS 1) defends against infection and disease 2) returns tissue fluids to the bloodstream |
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Respiratory System |
Major organs Nasal cavities, sinuses, larynx, trachea, bronchi, lungs, alveoli FUNCTIONS 1) delivers air to alveoli ( sites in lungs where gas exchange occurs) 2) provides oxygen to bloodstream 3) removes carbon dioxide from bloodstream 4) produces sounds for communication |
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Digestive systems |
Major organs Teeth, tongue, pharynx, esophagus, stomach, small intestine, large intestine, liver, gallbladder, pancreas FUNCTIONS 1) processes and digest food 2) absorbs and conserves water 3) absorbs nutrients 4) stores energy Reserves |
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Urinary system |
Major organs Kidneys, ureters, urinary bladder, urethra FUNCTIONS 1) excrete waste products from the blood 2) controls water balance by regulating volume of urine produced 3) stores Urine prior to voluntary elimination 4) regulates blood ion concentrations and pH |
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Male reproductive system |
Major organs Testes, epididymides, Ductus deferentia, seminal vesicles, prostate gland, Penis, scrotum. FUNCTIONS 1) produces male sex cells (sperm), seminal fluids, and hormones. 2) Sexual Intercourse |
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Female reproductive system |
Major organs Ovaries, uterine tubes, uterus, vagina, labia, clitoris, mammary glands FUNCTIONS 1) produces female sex cells (oocytes) and hormones 2) supports developing embryo from conception to delivery 3) provides milk to nourish newborn infant 4) Sexual Intercourse |
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The control of room temperature |
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Negative feedback |
A way to counteracting a change. |
Example: in thermo regulation, the relationship between heat loss, which takes place mainly at the body surface, and heat production, which takes place in all active tissues, is altered. |
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What is the control center for homeostasis? |
The hypothalamus, a region of the brain. |
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Where does the hypothalmus control center get information? |
Two sets of temperature receptors 1) in the skin 2) within the hypothalamus |
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Negative feedback: control of body temperature |
In negative feedback, a stimulus produces a response that opposes or negates the original stimulus. |
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Vessels diagram (not a definition) |
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What 2 things happen when body temperature rises above 37.2 celsius? (98.6 Fahrenheit) |
1) muscle tissue lining the walls of blood vessels supplying blood to the skin and sweat glands 2) the muscle tissue relaxes so the blood vessels dilate (widen), increasing blood flow through vessels near the body surface, and the sweat glands speed up their secretion of sweat. The skin then acts like a radiator by losing heat to the environment, and the evaporation of sweat speeds the process. |
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In homeostasis, what happens when body temperature regulates? |
1)The hypothalamus declines, and the thermo regulatory control center becomes less active. 2) Blood flow to the skin and sweat gland activity then decrease to previous levels. 3)Body temperature drops below the set point as the secreted sweat evaporates. |
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What is the primary mechanism for homeostasis |
Negative feedback |
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Negative feedback |
A variation outside the set point triggers an automatic response that corrects the situation. Minimizes change. |
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Positive feedback |
Increase the change that triggered it. Example giving birth |
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Negative feedback: control of body temperature (label the cycle) |
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What reasons does temperature vary? |
1) small fluctuations around the set point 2) changes in the set point |
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What determines homeostatic set points? |
Genetic factors, age, gender, general health, and environmental conditions. |
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When do positive feedback loops occur? |
When a potentially dangerous or stressful process must be completed quickly to restore homeostasis. Example, a severe cut and having loss of blood which lowers blood pressures and reduces the efficiency of the heart |
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Positive feedback blood clotting |
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Roles of organ systems in homeostatic regulation |
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Superficial anatomy |
On the surface |
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Frontal |
Forehead |
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Nasal |
Nose |
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Ocular or orbital |
Eye |
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Otic |
Ear |
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Buccal |
Cheek |
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Cervical |
Neck |
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Cephalic |
Head |
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Cranial |
Skull |
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Facial |
Face |
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Oral |
Mouth |
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Mental |
Chin |
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Axillary |
Armpit |
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Thoracic |
Chest or thorax |
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Mammary |
Breast |
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Brachial |
Arm |
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Antecubital |
Front of elbow |
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Antebrachial |
Forearm |
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Carpal |
Wrist |
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Abdominal |
Abdomen |
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Umbilical |
Navel |
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Pelvic |
Pelvis |
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Acromial |
Shoulder |
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Dorsal |
Back |
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Olecranal |
Back of elbow |
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Lumbar |
Loin |
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Gluteal |
Buttock |
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Popliteal |
Back of knee |
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Sural |
Calf |
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Palmar |
Palm |
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Pollex |
Thumb |
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Digits |
Phalanges or fingers |
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Patellar |
Knee cap |
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Inguinal |
Groin |
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Pubic |
Pubis |
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Femoral |
Thigh |
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Crural |
Leg |
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Calcaneal |
Heel of foot |
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Plantar |
Sole of foot |
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Tarsal |
Ankle |
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Hallux |
Great toe |
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Pedal |
Foot |
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Supine |
Face up |
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Prone |
Face down |
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What are the abdominopelvic quadrants? |
Right upper right lower left upper left lower |
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What are the 9 abdominopelvic regions? |
Right and left hypochondriac Right left lumbar Right lwft inguinal Epigastric Umbilical Hypogastric |
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Anatomical relationships |
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Frontal plane |
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Sagittal plane |
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Pleural cavities |
Hold the lungs |
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Visceral pleura |
Covers the outer surfaces of a lung |
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Parietal pleura |
Covers the mediastinal surface and the inner body wall |
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What does the mediastinum consist of? |
A mass of connective tissue that surrounds, stabilizes, and supports the esophagus, trachea, and thymus, as well as the major blood vessels that originate or end at the heart. |
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Pericardial cavity |
A small chamber that surrounds the heart. |
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