Chapter 1-3 Flashcards
What is anatomy?
structure
What is physiology?
function
10 Levels of Organization
- subatomic particles 2. atoms 3. molecules 4. macromolecules 5. organelle 6. cell 7.tissue 8.organ 9. organ system 10. organism
What is a subatomic particle?
electrons, protons, neutrons; particles that make up atoms
What is an atom?
chemicals that consists of tiny particles (subatomic); make up molecules; ex: hydrogen atom
What is a molecule?
atoms joined together; ex: water moleule; make up macromolecules
What is a macromolecule?
small molecules joined together; ex: protein molecule; make up organelles
What is an organelle?
carry on specific activities; composed of proteins, carbs, lipids, nucleic acids; ex: mitochondrion; make up cells
What is a cell?
basic unit of structure and function; ex: muscle cell; make up tissues
What is a tissue?
group of cells; ex: connective tissue; makes up organs
What is an organ?
groups of different tissues; complex structures with specialized functions; ex: heart; make up organ systems
What is an organ system?
groups of organs that function closely together; ex: skeletal system; makes up an organism
What is an organism?
interacting organ systems; ex: human being
11 organ systems
- skeletal
- integumentary
- cardiovascular
- lymphatic
- urinary
- reproductive
- respiratory
- muscular
- nervous
- endocrine
- digestive
What is the skeletal system?
bones, ligaments, cartilages
What is the integumentary system?
skin, hair, nails, sweat glands, sebaceous glands
What is the muscular system?
muscles
What is the nervous system?
brain, spinal cord, nerves, sense organs
What is the endocrine system?
glands that secrete horomones; pituitary gland, thyroid gland, parathyroid gland, adrenal glands, pancreas, ovaries, testes, pineal gland, and thymus
What is the cardiovascular system?
heart, arteries, capillaries, veins
What is the lymphatic system?
lymphatic vessels, lymph nodes, thymus, spleen
What is the digestive system?
mouth, tongue, teeth, salivary glands, pharynx, esophagus, stomach, liver, gallbladder, pancreas, small and large intestines
What is the respiratory system?
nasal cavity, pharynx, larynx, trachea, bronchi, lungs
What is the urinary system?
kidneys, ureters, urinary bladder, urethra
What is the reproductive system?
Male: scrotum, testes, urethra, penis
Female: ovaries, uterine tubes, uterus, vagina
10 Characteristics of Life
- movement
- responsiveness
- growth
- reproduction
- respiration
- digestion
- absorption
- circulation
- assimilation
- excretion
5 enviornmental factors of life
- water
- food
- oxygen
- heat
- pressure
What is homeostasis?
the body’s maintenance of a stable internal enviornment; the body is always striving for balance; hates chaos; examples- blood sugar; requires most of our metabolic energy; maintains through homeostatic mechanisms
What are the 3 homeostatic mechanisms?
- receptors
- control center
- effectors
In relation to homeostatic mechanisms, what are receptors?
provide information about specific conditions in the internal enviornment (molecule or cell); provides information about stimuli
In relation to homeostatic mechanisms, what is the control center?
the brain; decides the “set point” which is a particular value such as body temperature
In relation to homeostatic mechanisms, what are effectors?
muscles or glands causes responses that alter conditions in the internal enviornment; example: pancreas
Positive Homeostatic Mechanism
example- human childbirth; increases actions of the body; produces MORE instability; more chaos; only a few types necessary for our survival; unfrequent events; uncommon loop
Negative Homeostatic Mechanism
causes the opposite occur; always brings us back to the set point; reduces the actions of the effectors; limits chaos in the body; most COMMON type of feedback loop
Body Cavaties
cranial; vertebral; thoracic; abdominopelvic
Visceral
pertaining to the organs in a body cavity
Parietal
pertaining to the wall of an organ or cavity
Superior
near the head
inferior
towards the bottom
anterior
front/ventral
posterior
back/dorsal
medial
towards the midline
lateral
towards the side, away from the midline
ipsi-lateral
same side
contra-lateral
opposite side
proximal
for extremities only; closest to point of attachement
distal
for extremities only; furthest from point of attachment
superficial
near the surface/skin
deep
internal
sagittal
divides body into left and right portions (median)
mid-sagittal
divides body into EQUAL left and right portions
transverse
horizontal; divides body into superior and inferior
coronal
frontal; divides body into anterior and posterior
Quadrant System (US)
Right Upper; Right Lower; Left Upper; Left Lower
Matter
anything that takes up space and has mass; composed of elements
elements
composed of chemically identical elements; atoms are the smallest part
major elements
large amounts required; O, C, H, and N