Chapter 1 Flashcards
How structures of the human body function
Physiology
The science of the structure of the human body
Anatomy
The lowest level of organization in the human body
Chemical level
All chemicals necessary for maintaining life are composed of
Atoms
Atoms join together to form what
Molecules
Various chemicals in the form of molecules band together to form what
Cells
Basic structural and functional unit of the human body
Cell
Groups of similar cells that perform a specific function
Tissues
Four types of tissues
Epithelial
Connective
Muscular
Nervous
Covers internal and external surfaces of the body including linings of vessels and organs
Epithelial tissue
Supportive tissues that bind together and support various structures
Connective
Tissues that make up the substance of a muscle
Muscular
Tissues that make up the substance of nerves and nerve centers
Nervous
Perform a specific function for the human body
Organs
Consists of organs that perform a common or related function
System
Systems of the body
Skeletal Circulatory Digestive Respiratory Urinary Reproductive Nervous Muscular Endocrine Integumentary
Composed of cardiovascular organs which include the heart, blood, blood vessels, the lymphatic system, lymph nodes, lymph vessels, and lymph glands
Circulatory system
Support and protect the body
Allow movement by working along with muscles
Produce blood cells
Stores calcium
4 Functions of the skeletal system
Another name for the digestive system
Alimentary canal
Distributes O2 and nutrients to cells
Carries cell waste and CO2 from cells
Transports H2O, electrolytes, hormones, and enzymes
Prevents hemorrhaging by forming blood clots
Protects against disease
Helps regulate body temp
6 Functions of the Circulatory system
Prepares food for absorption by cells through chemical and physical breakdown process
Eliminates solid waste
2 Functions of the digestive system
composed of mouth-anus
digestive system
made up of two lungs, nose, mouth, pharynx, larynx, trachea, and bronchial tree
respiratory system
supplies O2 in the blood
eliminates CO2 in the blood
assists in regulating acid-base balance of blood
3 functions of the respiratory system
produces, collects, and eliminates urine
urinary system
regulates chemical composition of blood
eliminates many waste products
regulates fluid and electrolyte balance and volume
maintains acid base balance of body
4 functions of the urinary system
produce offspring, in other words reproduce itself
function of the reproductive system
male reproductive organs
testes, vas deferens, prostate and penis
female reproductive organs
ovaries, uterine tubes, uterus, vagina,
composed of the brain, spinal cord, nerves, ganglia, and special sense organs such as eyes and ears
Nervous system
regulate body activities with electrical impulses which travel along nerves
function of the nervous system
three types of muscular tissue that make up the muscular system
visceral
skeletal
cardiac
smooth and involuntary muscle located in the walls of hollow organs
visceral muscle tissue
composed of most of the body’s muscle mass (43%) striated and under voluntary control
skeletal muscle tissue
found only in the heart
cardiac muscle
allows movement
maintains posture
produces heat
3 functions of the muscular system
includes the ductless glands of the body such as: testes, ovaries, pancreas, adrenals, thymus, thyroid, parathyroids, pineal, and pituitary.
Endocrine system
regulates body activity by release of hormones through the bloodstream
function of the endocrine system
composed of the skin and all structures derived from it including hair, nails, sweat, and oil glands.
Integumentary system
Regulates body tem
protects the body
receives stimulus
eliminates waste through persperation
4 functions of the integumentary system
the study of bones
osteology
study of joints
arthrology
the adult body is composed of how many bones
206
the human skeleton is divided into what two parts
axial and appendicular
composed of the skull, vertebral column, ribs, and sternum
axial skeleton
how many bones make up the axial skeleton
80
composed of upper and lower limbs, the shoulders, and the pelvic girdles
appendicular skeleton
how many bones make up the appendicular skeleton
126
What type of bone is the patella considered
sesamoid bone
classification of bones
long bones
short bones
flat bones
irregular bones
consist of a body and 2 ends, only found on appendicular skeleton
Long bones i.e humerus, tibia, femur
cuboidal and short shaped bones
short bones i.e. wrist bones
consist of 2 plates of compact bone w/ spongy center
flat bones i.e. scapula, sternum
peculiar shaped, all other bones
irregular bones i.e. facial bones, vertebrae