Anatomy Flashcards
Anatomy
The study of the physical structure of the body and its components
Physiology
The study of the normal functions of the living organisms and their parts
Pathophysiology
Study of how normal physiologic processes are affected by disease
Thoracic cage
Ribcage
Joint
The place where two bones meet
Ligament
The muscle tissue that connects bones to bones (supports/strengthen joints)
Tendon
The muscle tissue that connects muscle to bone
Cartilage
Cushion between bones
Vertebrae
Bones in the spine (vertebral column)
Cervical spine
First 7 (C1-C7) vertebrae in the neck
Thoracic spine
Next 12 (T1-T12) vertebrae
Lumbar spine
Next 5 (L1-L5) vertebrae
Sacrum
5 Sacral vertebrae that form the sacrum (S1-S5)
Coccyx
Tailbone; last 4 vertebrae that form the coccyx
Thorax
Chest
Sternum
Breast bone
Pectoral girdle
Shoulder
Scapula
Shoulder blade
Clavicle
Collarbone
Femur
Thighbone (longest bone in body, one of the strongest)
Tibia
Shinbone; larger of the 2 bones in the lower leg
Fibula
Smaller of the 2 bones in the lower leg on the lateral side
Nasopharynx
Upper airway; upper section of the pharynx that connects with the nasal cavity
Oropharynx
Upper airway; section of the pharynx at the back of the throat, from the back of the mouth to the esophagus and trachea
Larynx
Upper airway; voicebox
Laryngpharynx
Upper airway
Epiglottis
Upper airway; valve that allows air to pass into trachea but prevents food/liquids from entering
Trachea
Lower airway; windpipe, main trunk for passing air to and from lungs
Thyroid cartilage
Lower airway; Adam’s apple, forms the upper part of the larynx
Alveoli
Lower airway; air sacs of the lungs in which the exchange of oxygen and CO2 take place
Main bronchi
Lower airway; air passageway to lungs, from the trachea
Bronchioles
Lower airway; smaller bronchi in the lungs
Diaphragm
Contraction of this muscle brings air into the lungs. Relaxation allows air to be expelled from the lungs.
Ventilation
Exchange of air between lungs and the environment; occurs spontaneously by patient or with assistance from another person, such as an EMT
Respiration
Process of exchanging oxygen and CO2
Adult male lung capacity
6000mL
Adult woman lung capacity
4000mL
Tidal volume
Amount of air (mL) that is moved in or out of lungs during one breath
Average tidal volume in adults
500mL
Inspiratory reserve volume
Amount of air that can be inhaled after a normal breath (in addition to tidal volume)
Expiratory reserve volume
Amount of air that can be exhaled after a normal exhilation
Residual volume
Air that remains in the lungs after fully exhaling
Average inspiratory reserve volume in adults
3000mL
Average expiratory reserve volume in adults
1200mL
Average residual volume in adults
1200mL
Minute volume
Volume of air that moves in and out of lungs per minute (Minute volume=respiratory rate * tidal volume)
Signs of inadequate breathing in adults
Muscle retractions, pale or cyanotic (blue) skin, cool and damp (clammy) skin, tripod position
Heart
Pumps blood throughout the body
Myocardium
The heart muscle
Atrium
Upper chambers (2) in the heart
Ventricle
Lower chambers (2) in the heart
Veins
Blood vessels that carry blood from the tissues to the heart
Pulmonary veins
4 veins that return oxygenated from the lungs to the left atrium of the heart
Aorta
Main artery leaving the left side of the heart and carrying freshly oxygenated blood to the body
Heart rate (HR)
Number of heart beats per specific time (usually 1 minute)
Stroke volume (SV)
Volume of blood pumped forward with ventricular contraction (heart beat)
Cardiac output (CO)
Amount of blood moved per minute (CO=HR * SV)
Pulse
Wave of pressure created as the heart contracts and forces blood out the left ventricle into the major arteries
Carotid artery pulse
Upper neck
Femoral artery pulse
Groin
Radial artery pulse
Wrist (base of thumb)
Brachial artery pulse
Medial aspect of arm, halfway between the elbow and shoulder
Posterior tibial artery pulse
Posterior to tiny bump on inner ankle
Dorsalis pedis artery pulse
Top of foot
Hemoglobin
Protein in red-blood cells carrying oxygen
Red blood cells
Cells that carry oxygen to body’s tissues
White blood cells
Cells that have a role in body’s immune defense mechanism against infection
Blood pressure (BP)
Pressure that blood exerts against the walls of the arteries as it passes through them (systolic/diastolic)
Systolic blood pressure
Pressure within the arteries when the heart is contracting
Diastolic blood pressure
Pressure within the arteries when the heart is at rest
Pulse pressure
Difference between systolic and diastolic blood pressures
Preload
Amount of blood returning to the heart
Afterload
Pressure to be overcome when left ventricle contracts (same as diastolic pressure)
Perfusion
Flow of blood through body tissues/vessels
Hypoperfusion (shock)
Inadequate perfusion (flow of blood through body tissues/vessels)
Esophagus
Tube that extends from the pharynx to the stomach; muscle contractions propel food/liquids through it to the stomach
Liver
Removes toxins, processes food nutrients, and regulates body metabolism.
Enzymes
Speed up the rate of specific biochemical reactions
Kidneys
2 organs that excrete the end products of metabolism as urine and regulate the body’s salt and water content
Ureter
Tube that carries urine from the kidneys to the bladder
Urethra
Canal that conveys urine from the bladder to outside the body
Respiratory compromise
Inability of the body to move gas effectively, can result in hypoxia and/or hypercapia
Hypoxia
Deficient oxygen concentration in the body
Hypercapnia
Abnormally high CO2 level in the bloodstream
Hypovolemic shock
Lack of blood volume; circulating blood volume is not enough to deliver enough oxygen and nutrients to the body
Cardiogenic shock
Associated with impaired heart function; compromised heart function prevents wastes and nutrients from moving around the body effectively
Obstructive shock
Results from blocked blood flow back to or through the heart
Anaphylactic shock
Results from severe allergic reactions
Septic shock
Results from severe infection
Neurogenic shock
Results from injury to the nervous system
Atherosclerosis
Disorder in which cholesterol and calcium build up inside the walls of blood vessels, forming plaque, which eventually leads to a partial or complete blockage of blood flow