Chapter 1 - Intro to Human Anatomy and Physiology Flashcards
deals with structures of body parts
Anatomy
concerned with functions of body parts
Physiology
Why is it often difficult to separate anatomy from physiology and vice versa?
Because the function of a part depends on its form.
Smallest chemical unit
atom
Atoms are bound together to form these
molecules
Small molecules may combine to form these
macromolecules
The basic unit of structure and function in the body
cell
Composed of aggregates of large molecules; carry on specific activities of the cell
organelles
Organized cells in layers/masses that have specific functions
tissues
Groups of different tissues form these complex structures with specialized functions
organs
A group of organs that function closely together
organ system
Interacting organ systems make up a/an ___?
organism
Environment within the body in which the cells live
internal environment
Maintenance of a relatively constant internal environment
homeostasis
What is interdependency of cells?
different cells contribute to homeostasis in different ways
Name two types of gradients
- pressure gradient
* concentration gradient
Cell membrane controls what it allows in and out
permeability
Cells become specialized through this process
Cellular differentiation (gene leads to protein leads to function)
Cell membrane mechanisms
- determines what substances can enter or leave the cell
* responds to some signals, but ignores others
Uses specialized molecules on the membrane called membrane receptors
Cell-to-cell communication
an underlying component of the physiological control systems that maintain homeostasis
Feedback loops
Internal environment stays relatively constant; replaces substances that are lost and eliminates substances in excess
Balance
List the 10 requirements of life
- Movement
- Responsiveness
- Growth
- Reproduction
- Respiration
- Digestion
- Absorption
- Circulation
- Assimilation
- Excretion
Change in position of the body or of a body part; motion of an internal organ
movement
Reaction to a change taking place inside or outside of the body
responsiveness
Increase in body size without change in shape
growth
Production of new organisms and new cells
reproduction
Obtaining oxygen, removing carbon dioxide, and releasing energy from food (some forms of life do not use oxygen in this process)
respiration
Breakdown of food substances into simpler forms that can be absorbed and used
digestion
Passage of substances through membranes into body fluids
absorption
Movement of substances from place to place in body fluids
circulation
Changing of absorbed substances into chemically different forms
assimilation
Removal of wastes produced by metabolic reactions
excretion
List the 5 requirements of organisms
- Water
- Food
- Oxygen
- Heat
- Pressure
What is water required for?
- required for many metabolic reactions
- helps in temperature regulation
- transports substances
- lubrication
What is food required for?
- supply energy
* supply raw materials for building new living matter
What is oxygen required for?
- used by the body release energy from nutrients
What is heat required for?
- product of metabolic reactions - partly controls the rate at which these reactions occur
- temperature is a measure of the amount of heat present
What is pressure required for?
- atmospheric pressure plays in an important role in respiration
- hydrostatic pressure keeps blood flowing via blood pressure
3 components of homeostatic mechanisms:
- receptors
- control centers
- effectors
Provide information about specific conditions (stimuli) in the internal environment
receptors
Includes a set point; tells what a particular value should be
control center
Cause responses that alter conditions in the internal environment
effectors
Many homeostatic mechanisms are controlled by ____?
negative feedback
In this process, when conditions return to normal, the effectors shut down
negative feedback
Examples of negative feedback
- temperature regulation
- maintenance of blood pressure
- maintenance of blood glucose level
In this process, conditions move away from the normal state.
positive feedback
Examples of positive feedback
- blood clotting
* contractions during birth
Two main body cavities
- axial
* appendicular
What cavities are within the axial cavity?
- dorsal
* ventral
What cavities are within the dorsal cavity?
- cranial
* spinal (aka vertebral canal)
What cavities are within the ventral cavity?
- thoracic
* abdominopelvic
What separates the thoracic cavity from the abdominopelvic cavity?
diaphragm
What does the thoracic cavity contain?
- lungs
* mediastinum
What does the mediastinum contain?
- heart
- esophagus
- trachea
- thymus gland
What cavities does the abdominopelvic cavity contain?
- abdominal
* pelvic
What does the abdominal cavity contain?
most of the digestive organs
What does the pelvic cavity contain?
- urinary bladder
* reproductive organs
List the smaller cavities within the head
- oral
- nasal
- orbital
- middle ear
What does the oral cavity contain?
teeth and tongue
What does the nasal cavity contain?
(located w/in the nose) several air-filled sinuses
What does the orbital cavity contain?
eyes and associated skeletal muscles and nerves
What do the middle ear cavities contain?
middle ear bones
What does the appendicular cavity contain?
includes upper and lower limbs
What thin membranes line the walls of the thoracic and abdominal cavities and fold back to cover the organs within these cavities?
serous membranes
What fluid separates the parietal layer (lines the wall) from the visceral layer (covers the organs)?
serous fluid
List the four thoracic membranes
- parietal pleura
- visceral pleura
- visceral pericardium
- parietal pericardium
What lines the thoracic cavity?
parietal pleura
What covers the lungs?
visceral pleura
What covers the heart?
visceral pericardium
What, along with the fibrous pericardium, surrounds the heart and forms a protective sac for it?
parietal pericardium
List the 2 abdominopelvic membranes?
- parietal peritoneum
* visceral peritoneum
What lines the cavity?
- parietal peritoneum
What covers the organs in this cavity?
- visceral peritoneum
What body system deals with “body covering”?
integumentary system
What organs/body parts make up the integumentary system?
skin, accessory organs such as hair, nails, sebaceous, and glands, sweat glands
What is the purpose of the integumentary system?
- protects underlying tissues
- regulates temperatures
- houses sensory receptors
- synthesizes products
What two organ systems deal with support and movement?
skeletal and muscular
What organs/body parts make up the skeletal system?
bones, ligaments, cartilages
What organs/body parts make up the muscular system?
muscles
What is the purpose of the skeletal system?
frameworks, protective shields, muscle attachment sites, production of blood cells, stores inorganic salts
What is the purpose of the muscular system?
body movements, production of heat, maintain posture
What two organ systems deal with integration and coordination?
nervous and endocrine
What organs/body parts make up the nervous system?
brain, spinal cord, nerves, sensory organs
What organs/body parts make up the endocrine system?
glands that secrete chemical messengers to target tissue in order to alter the metabolism of that tissue
pancrease, thyroid, ovaries, and testes are a few examples
What is the purpose of the nervous system?
detect changes, receive and interpret sensory information, stimulate muscles and glands
What is the purpose of the endocrine system?
control metabolic activities of body structures
What two organ systems deal with transport?
cardiovascular and lymphatic
What organs/body parts make up the cardiovascular system?
heart, arteries, veins, capillaries, blood
What organs/body parts make up the lymphatic system?
lymph nodes, lymphatic vessels, lymph
What is the purpose of the cardiovascular system?
carry oxygen, nutrients, and hormones to cells, takes waste products from cells
What is the purpose of the lymphatic system?
transports tissue fluid to blood, carries fats, defends against infection
What three organ systems deal with absorption and excretion?
digestive, urinary, and respiratory
What organs/body parts make up the digestive system?
stomach, small and large intestines, pancreas, liver
What organs/body parts make up the urinary system?
urinary bladder, ureters, kidneys, urethra
What organs/body parts make up the respiratory system?
lungs, trachea
What is the purpose of the digestive system?
receive foods and break them down into usable forms
What is the purpose of the urinary system?
remove waste from the blood, maintain water and electrolyte balance
What is the purpose of the respiratory system?
exchange gases between air and blood
What organ system deals with reproduction?
reproductive system
What organs/body parts make up the reproductive system?
testes, ovaries
What is the purpose of the reproductive system?
produce new organisms like self
What is the anatomical position?
Standing erect, face is forward, arms are at side, palms are facing forward
Used to describe the location of one body part with respect to another
relative position
One part is above another part, or closer to the head
superior
One part is below another part, or closer to the feet
inferior
Towards the front
anterior (ventral)
Towards the back
posterior (dorsal)
One part is closer to the midline of the body
medial
One part is away from the midline of the body
lateral
Pertains to the same side
ipsilateral
Refers to the opposite side
contralateral
Refers to paired structures, one on each side
bilateral
One part is closer to the point of attachment to the body
proximal
One part is further from the point of attachment to the body
distal
Situated near the surface
superficial/external
Towards the side
peripheral
Parts are more internal
deep
List the 3 body sections (HIM referred to these as planes)
- sagittal
- transverse
- frontal (coronal)
Lengthwise cut producing left and right portions
sagittal
Lengthwise cut at the midline that produces equal right and left portions
midsagittal
Horizontal cut that produces superior and inferior sections
transverse
Lengthwise cut that divides the body into anterior and posterior portions
frontal (coronal)
List the 9 regions of the abdominopelvic region
- Left and right hypochondriac
- epigastric
- Left and right lateral
- umbilical
- Left and right inguinal
- hypogastric
List the 4 quadrants of the abdominopelvic region
- Right and Left Upper Quadrants
* Right and Left Lower Quadrants
region between the thorax and the pelvis
abdominal
point of the shoulder
acromial
forearm
antebrachial
anterior surface of the elbow
antecubital
axillary
armpit
brachial
arm
buccal
wrist
celiac
abdomen
cephalic
head
cervical
neck
costal
ribs
coxal
hip
crural
leg
cubital
elbow
digital
finger/toe
dorsal
back
femoral
thigh
frontal
forehead
genital
external reproductive organs
gluteal
buttocks
inguinal
depressed area of the abdominal wall near the thigh (groin)
lumbar
region of the lower back between the ribs and the pelvis
mammary
breast
mental
chin
nasal
nose
occipital
inferior posterior region of the head
oral
mouth
orbital
eye cavity
otic
ear
palmar
palm of the hand
patellar
anterior part of the knee
pectoral
anterior chest
pedal
foot
pelvic
pelvis
perineal
the inferior-most region of the trunk between the thighs and the buttocks (perineum)
plantar
sole of the foot
popliteal
area posterior to the knee
sacral
posterior region between the hip bones
sternal
middle of the thorax, anteriorly
sural
calf of the leg
tarsal
ankle
umbilical
navel
vertebral
spinal column
branch of medical science dealing with the heart and heart diseases
cardiology
study of skin and its diseases
dermatology
study of hormones, hormone-secreting glands, and associated diseases
endocrinology
study of the factors that contribute to determining the distribution and frequency of health-related conditions within a defined human population
epidemiology
study of the stomach and intestines, as well as their diseases
gastroenterology
branch of medicine dealing with older individuals and their medical problems
geriatrics
study of the process of aging and the various problems of older individuals
gerontology
study of the female reproductive system and its diseases
gynecology
study of the blood and blood diseases
hematology
study of the structure and function of issues (microscopic anatomy)
histology
study of the body’s resistance to disease
immunology
study of newborns and the treatment of their disorders
neonatology
study of the structure, function, and diseases of the kidneys
nephrology
study of the nervous system in health and disease
neurology
branch of medicine dealing with pregnancy and childbirth
obstetrics
study of cancers
oncology
study of the eyes and eye diseases
ophthalmology
branch of medicine dealing with the muscular and skeletal systems and their problems
orthopedics
study of the ears, throat, larynx, and their diseases
otolaryngology
study of the structural and functional changes within the body associated with disease
pathology
branch of medicine dealing with children and their diseases
pediatrics
study of drugs and their uses in the treatment of diseases
pharmacology
study of the care and treatment of the feet
podiatry
branch of medicine dealing with the mind and its disorders
psychiatry
study of x-rays and radioactive substances, as well as their uses in diagnosing and treating diseases
radiology
study of poisonous substances and their effects on physiology
toxicology
branch of medicine dealing with the urinary and male reproductive systems and their diseases
urology