Chapter-1 Flashcards
Anatomy
study of structural basis of body function
Gross Anatomy (macroscopic)
structure visible to naked eye
Regional Anatomy
multiple organ systems at once in a given region of body
Systemic Anatomy
one organ system at a time
Surface Anatomy
external structure
Microscopic Anatomy (histology)
tissue specimens
Cytology
structure and function of individual cells
Histology
slice/stained tissue specimens observed under microscope
Developmental Anatomy
trace changes throughout lifespan
Embryology
developmental changes occur before birth
Physiology
study of functional relevance of that structure
Principle of Complementarity of structure and function
Anatomy and Physiology are inseparable, function always reflects structure and what a structure can do depends on its specific form
Levels of Structural Organization
Hierarchy. Chemical, Cellular, Tissue, Organ level, Organ System level
Chemical Level
atoms combine to form molecules
Atoms
smallest building blocks
Molecules
group of atoms
Organelles
molecules come together
Cellular Level
cells are made up of molecules
Tissue Level
groups of similar cells that have common function
Epithelial Tissue
type of tissue covers body surfaces, lining all cavities
Connective Tissue
Supports and protects organs
Muscle tissue
tissue composed of elongated, electrically excitable cells specialized for contraction
Nervous Tissue
means of rapid internal communication by transmitting impulses
Organ Level
organs are made up of different types of tissues
Organismal
all organ systems
Organ System Level
11-groups of organs that carry out a basic function of the organism
Integumentary System- organs
skin, hair, nails, cutaneous glands
Integumentary System- function
protection, water retention, thermoregulation, vitamin D synthesis, cutaneous sensation, nonverbal communication
Skeletal System- organs
bones, cartilages, ligaments
Skeletal System- function
support, movement, protective enclosure of viscera, blood formation, mineral storage, electrolyte, and acid-base balance
Muscular System- organs
skeletal muscles
Muscular System- function
movement, stability, communication, control of body openings, heat production
Nervous System- organs
brain, spinal cord, nerves, ganglia
Nervous System- function
rapid internal communication, coordination, motor control, and sensation
Endocrine System- organs
pituitary, pineal, thyroid, parathyroid, adrenal glands, thymus, pancreas, testes, ovaries
Endocrine system- function
hormone production, internal chemical communication, and coordination
Circulatory System- organs
heart, blood vessels
Circulatory System- function
distribution of nutrients, oxygen, wastes, hormones, electrolytes, heat, immune cells and antibodies, and acid-base balance
Lymphatic System- organs
lymph nodes, lymphatic vessels, thymus, spleen, tonsils
Lymphatic System- function
recovery of excess tissue fluid, detection of pathogens, production of immune cells, defense against disease
Respiratory System- organs
nose, pharynx, larynx, trachea, bronchi, lungs
Respiratory System- function
absorption of oxygen, discharge of carbon dioxide, acid-base balance, speech
Digestive System- organs
teeth, tongue, salivary glands, esophagus, stomach, small and large intestines, liver, gallbladder, pancreas
Digestive System- function
nutrient breakdown and absorption
liver functions
metabolism of carbohydrates, lipids, proteins, vitamins and minerals, synthesis of plasma proteins, cleansing of blood, disposal of drugs, toxins, and hormones
Urinary System- organs
kidneys, ureters, urinary bladder, urethra
Urinary System- function
elimination of wastes, regulation of blood volume and pressure, stimulation of red blood cell formation, control of fluid, electrolyte and acid-base balance, detoxification
Male Reproductive System- organs
testes, epididymides, spermatic ducts, seminal vessicles, prostate gland, bulbourethral glands, penis
Male Reproductive System- function
production and delivery of sperm, secretion of sex hormones
Female Reproductive System- organs
ovaries, uterine tubes, uterus, vagina, mammary glands
Female Reproductive System- function
production of eggs, site of fertilization and fetal development, fetal nourishment; birth, lactation; secretion of sex hormones
The language of Anatomy
anatomical position, directional terms, regional terms, divisions of the body, anatomical variability, body planes and sections, body cavities and membranes
Anatomical position
standard body position- upright with feet flat and close together, arms at sides, palms and face directed forward
Right and Left
refer to body being viewed
Directional terms
describe locations of structures
Superior (cranial)
above, toward head end, upper part of body
Inferior (caudal)
below, away from head end, lower part of body
Ventral
toward or at front of body
Dorsal
toward back of body
Medial
toward midline of body
Lateral
away from midline
Intermediate
between a more medial and a more lateral structure
Proximal
closer to point of attachment
Distal
farther from point of origin
Superficial
external- closer to body surface
Deep
internal- further from body surface
Regional terms
designate specific within body divisions
Axial part
head, neck, and trunk
Appendicular part
upper and lower limbs
Anatomical variability
humans differ externally and internally.
Body plane
flat surface along which body or structure may be cut for study
Sagittal plane
extends vertically and divides the body into right and left portions
Midsagittal plane (median)
passes through midline and divides equal right and left halves
Parasagittal plane
unequal right/ left portions
Frontal plane (coronal)
anterior and posterior portions
Transverse plane (horizontal)
perpendicular to its long axis. divides body into superior and inferior portions
Dorsal body cavity
protects nervous system
Cranial cavity
encases brain
Vertebral cavity
encases spinal cord
Ventral body cavity
houses internal organs
Thoracic cavity
subdivided 2, pleural cavity (lung) and pericardial cavity (heart)
Pleural cavity
contains lungs
Mediastinum
thick partition
Pericardial cavity
contains heart
Abdominopelvic cavity
consists of the abdominal cavity superiorly and the pelvic cavity inferiorly
Abdominal cavity
contains most of digestive organs as well as spleen, liver, kidneys, and ureters
Pelvic cavity
urinary bladder, prostate glands
Nine Regions of abdomen
umbilical, epigastric, hypogastric, right/left lumbar, right/left hypochondriac, right/left iliac
What organ/s is/are in the umbilical region?
small intestine
Epigastric region?
liver, gallbladder, 10th rib
Hypogastric region?
urinary bladder, urethra
Right/Left Lumbar regions?
large intestine
Four quadrants of abdomen
right/ left upper quadrant, right/left lower quadrant
Serosa
outer layer- divides and wraps around
Parietal serosae
lines internal body cavity walls
Parietal pericardium
outer layer lining pericardial cavity
Parietal pleura
outer layer lining thoracic cavity (inside of rib cage)
Parietal peritoneum
lines walls of the abdominalpelvic cavity
Visceral serosae
covers internal organs
Visceral pericardium
covers heart
Visceral pleura
covers outside of lungs
Visceral peritoneum
covers most of the organs in the abdominalpelvic cavity
Serous fluid
fluid secreted by both layers of membrane. between visceral and parietal