Chapter 1 - The Human Body: An Orientation Flashcards
Anatomy
Study of the structure of the body, parts and their relationship to one another
Gross Anatomy
Study of large body structures that are visible to the naked eye (heart/lungs)
Systemic Anatomy
Body structure; system by system (cardiovascular)
Regional Anatomy
Studying according to regions. (head and neck, upper and lower limbs, muscles, bones, blood vessels)
Microscopic Anatomy
Too small to see with the eye and a microscope is involved
Cytology
Study of cells
Histology
Study of tissue
Developmental Anatomy
Study of structural changes that occur throughout lifespan
Embryology
Study of the fetus and the development changes before birth
Physiology
Study of the function of the body
Structure and Function
Description of the structure of anatomy and its function (bones support and protect organs)
Chemical Level
Levels of hierarchy
Atoms
Combine to form molecules; building block to anything
Molecules
Form water and protein
Cellular Level
Made of molecules; smallest unit of living things (cells and organelles)
Tissue Level
Groups of similar tissue/cells that have a common function.
Epithelial Tissue
has cells that line cavities/surfaces and make up glands for the human body
Connective Tissue
Fibrous tissue that makes up nose and cartilage of the body.
Muscle Tissue
- Smooth
- Skeletal
- Cardiac
Nervous Tissue
Nerves, brain, spinal cord and the electrical impulses.
Organ Level
2+ types of tissue
Organ System Level
Different organs that work together closely
Integumentary System
Forms external body covering and protects deeper tissue from injury
Organs - skin, hairs, nails
Function - synthesizes vitamin D and houses cutaneous (pain, pressure, etc.) receptors and sweat and oil glands.
Skeletal System
Includes bones and joints
Organs - none
Function - protects and supports body organs and provides a framework the muscles use to cause movement. Blood cells are formed within bones. Bones store minerals
Muscular System
Allows manipulation of the environment, locomotion and facial expression.
Organs - muscles
Function - Maintains posture, produces heat and movement.
Nervous System
Control system
Organs - brain, spinal cord and nerves
Function - activating appropriate glands and muscles
Endocrine System
Secreting hormones
Organs - pineal gland, pituitary gland, thyroid gland, thymus, adrenal gland, pancreas, ovaries, and testis
Function - secret hormones that regulate processes such as growth, reproduction, and nutrient use (metabolism) by the body cells.
Cardiovascular System
Organs - heart, blood and vessels
Function - transport blood (oxygen, carbon and water); heart is used as a pump for blood
Lymphatic System
The immune response mounts the attack against foreign substances within the body
Organs - red bone marrow, thymus, lymphatic vessels, thoracic duct, spleen and lymph nodes
Function - pucks up leaked fluid from blood vessels and protects body from harmful things. Contains white blood cells.
Respiratory System
Organs - nasal cavity, pharynx, larynx, trachea, lungs and bronchus
Function - keep blood supplied with oxygen, filter for the environment, removes CO2
Digestive System
Organs - oral cavity, esophagus,, liver, stomach, small intestine, large intestine, rectum and anus. Function - Breaks down food into absorbable units that enter the blood for distribution to body cells. Indigestible foodstuffs are eliminates as feces.
Urinary System
Organs - kidney, ureter, urinary bladder, urethra. Function - eliminates nitrogenous wastes from the body. Regulates water, electrolyte and acid-base balance of the body.
Reproductive System
Produce offspring
Organs - Male - prostate gland, penis, testis, scrotum, and ductus deferens.
Function - Male - testes produce sperm and male sex hormone, and male ducts and glands aid in delivery of sperm to the female reproductive tract.
Organs - Female - mammary glands, ovaries, uterus, uterine tube, and vagina
Function - Ovaries produce eggs and female sex hormones. The remaining female structures serve as sites for fertilization and development of the fetus. Mammary glands produce milk to nourish the newborn.
Anatomical Position
When the body is standing, feet apart, pals and feet face forward.
Right and left - inverted from doctor; patient is facing you.
Superior
Toward head; upper part of structure
Inferior
Away from head; below part of structure
Ventral and Anterior
Toward or at front of body
Dorsal and Posterior
Toward or back of the body (heart is posterior to breast bone)
Medial
Toward or at midline of the body
Lateral
Away from the midline of the body; on the other side of
Intermediate
Between medial and lateral structure (collarbone is intermediate the breast plate and shoulder)
Proximal
Closer to the origin of the body part; the point of attachment of a limb to the trunk
Distal
Farther from the origin of the body part of the point of attachment of a limb to the trunk
Superficial
Toward or at the body surface (skin < muscles)
Deep
Away from the body surface; more internal (muscles > skin)
Axial Part
Head, neck and trunk
Appendicular Part
Limbs (arms and legs); appendages attached to the bodies axis
Regional Terms
Specific areas (upper and lower limbs)
Sagittal Plane
Vertical plane which divides body VIRTICALLY into right and left parts
Midsagittal Plane
Right on the midline
Parasagittal Plane
Lies right next to the midline
Frontal Plane
Divides body vertically into anterior and posterior
Transverse Plane
Horizontal plane divides into superior and inferior parts; produces a cross section
Dorsal Body Cavity
Protects brain and nervous system
Cranial Cavity
Holds brain
Vertebral Cavity
Holds spinal cord
Ventral Body Cavity
Holds internal organs; 2 subdivisions that are separated by the diaphragm (pleural and pericardial)
Pleural Cavities
Holds a lung
Mediastinum
Space between pleural and pericardial cavities
Pericardial Cavity
Contains the heart
Abdominal Cavities
Stomach intestines, spleen and liver
Pelvic Cavity
Urinary bladder, reproductive organs, and rectum
Umbilical Region
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Epigastic Region
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Hypogastric Region
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Right and Left Lumbar Regions
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Right and Left Hypochondriac Regions
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Right and Left Iliac Regions
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Serous Membrane
The walls of the ventral body cavity and the outer surfaces of the heart, it contains are covered by a thin double layered membrane
Parietal Serosae
Outer lining of the heart
Parietal Pericardium
Around; lining
Parietal Pleura
Lung lining
Parietal Peritoneum
Outer abdominal lining
Visceral Serosae
Inner lining of the heart
Visceral Pericardium
Layer directly on the heart
Visceral Pleura
Lines directly on the lungs
Visceral Peritoneum
Inner layer of the abdominal lining
Serous Fluid
Fluid found in the lining used to prevent friction