Contains urinary bladder, reproductive organs, and rectum
Use patient's left/right and up/down, not yours
How many body systems does a human body have?
Basic unit of all life
Collection of cells acting together to do something
Group of organs and other structures that work together to perform specific functions
A system of organs, functioning in the process of gas exchange between the body and the environment, consisting especially of the nose, nasal passages, nasopharynx, larynx, trachea, bronchi, and lungs.
(Nose, mouth, pharynx, larynx)FUNCTION:Conducts air to lower airway Protects lower airways *Warms, filters & humidifies air
trachea, bronchi, bronchioles, and aveoli (gasses travel through the structers to and from the blood)
Contraction of diaphragm => creates negative pressure in thoracic cavity => air flows into lungs
Movement of a volume of air into and out of the body
Volume of air moved pre breath
Carbon Dioxide role in breathing
Increase in CO2 = increase in breathing rate
Heart, blood vessels, and blood. Circulates blood around the body via the heart, arteries and veins, delivering oxygen and nutrients to organs and cells and carrying their waste products away.
Air is inhaled, diaphragm contracts
Air is exhaled, diaphragm expands
Chambers of heart
right atrium, right ventricle, left atrium, left ventricle
Journey of blood
Right atrium, right ventricle, pulmonary arteries, lungs, left atrium, left ventricle, aorta, arteries, capillaries, veins
Superior/inferior venae cavae
Two largest veins in the body
Blood in the heart
Arteries, arterioles, veins, venues, capillaries
Veins that carry deoxygenated blood back to the heart
Carry oxygenated blood from lungs to heart
small vessels that gather blood from the capillaries into the veins
Red blood cells
Blood cells that carry oxygen from the lungs to the body cells. Removes CO2 from the cells.
White blood cells
Blood cells that perform the function of destroying disease-causing microorganisms
tiny, disk-shaped bodies in the blood, important in blood clot formation
the drive to breathe is stimulated by what?
Rise in blood CO2 level
the body's speedy, electrochemical communication network, consisting of all the nerve cells of the peripheral and central nervous systems
Central Nervous System
consists of the brain and spinal cord
Peripheral Nervous System
the sensory and motor neurons that connect the central nervous system to the rest of the body
Area of the brain responsible for all voluntary activities of the body
the "little brain" at the rear of the brainstem; functions include processing sensory input and coordinating movement output and balance.
the oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull; the brainstem is responsible for automatic survival functions
three protective membranes that surround the brain and spinal cord
Fluid in the space between the meninges that acts as a shock absorber that protects the central nervous system.
Properties of Cerebrospinal fluid
Buoyancy, brain stays locked in fluid because of density. Cushioning/protection, liquid protects brain from striking inside of skull Chemical stability, flow carries metabolic wastes away from nervous system tissues, regulate chemical concentrations and pH
also known as the digestive system, extends from the mouth to the anus, and responsible for digestion and elimination
Path of food
Food enters through mouth, is chewed, passes through esophagus, into stomach. From stomach to small intestine, digestion takes place and nutrients are absorbed through intestinal wall into venous blood vessels. Nutrients go to liver before going to heart. Waste goes to last intestine/colon, where water is absorbed and wasted goes through rectum/anus.
A large solid organ that lies in the right upper quadrant immediately below the diaphragm; it produces bile, stores glucose for immediate use by the body, and produces many substances that help regulate immune responses.
Eliminates nitrogenous wastes from the body. Regulates water, electrolyte and acid-base balance of the blood.
Glands secrete hormones that regulate processes such as growth, reproduction, and nutrient use (metabolism) by body cells.
Functions: protects against environmental hazards; helps regulate body temperature; provide sensory information
Protects and supports body organs and provides a framework the muscles use to support movement. Made up of bones and joints. Skull, spinal column, thorax, pelvis, upper extremities, lower extremities.
Consists of skeletal muscles, tendons that connect muscles to bones, and ligaments that attach bones together to form joint
Voluntary muscles, under control of voluntary nervous system
Involuntary muscle, muscle tissue in which the contractile fibrils are not highly ordered, occurring in the gut and other internal organs and not under voluntary control.
In the walls of the heart, shares properties of skeletal and mouth muscle. Generates electrical impulses
Reproduce offspring- produce male sex cells (sperm) and female sex cells (oocytes)
Composed of a network of vessels, ducts, nodes, and organs. Provides defense against infection.
A tendency to maintain a balanced or constant internal state; the regulation of any aspect of body chemistry, such as blood glucose, around a particular level
pumps blood to the lungs to be oxygenated
pumps oxygenated blood to the body
Deliver oxygen rich blood from the lungs to the left atrium
artery carrying oxygen-poor blood from the heart to the lungs
back of head
Involuntary or smooth muscles are found in
Intestines and blood vessels
An iron-containing protein in red blood cells that reversibly binds oxygen.
Liquid part of blood
Blood pressure that remains between heart contractions.
Blood pressure in the arteries during contraction of the ventricles.