Chapter 6 - Anatomy and Physiology Flashcards
acetabulum
the pelvic socket into which the ball at the proximal end of the femur fits to form the hip joint
acromioclavicular joint
the joint where the acromion and the clavicle meet
acromion process
the highest portion of the shoulder
alveoli
the microscopic sacs of the lungs where gas exchange with the bloodstream takes place
anatomy
the study of body structure
aorta
the largest artery in the body. It transports blood from the left ventricle to begin systemic circulation
appendix
a small tube located near the junction of the small and large intestines in the right lower quadrant of the abdomen, the function of which is not well understood. Its inflammation, called appendicitis, is a common cause of abdominal pain
arteriole
the smallest kind of artery
artery
any blood vessel carrying blood away from the heart
atria(atrium)
the two upper chambers of the heart. There is a right atrium (which receives unoxygenated blood returning from the body) and a left atrium (which receives oxygenated blood returning from the lungs)
automaticity
the ability of the heart to generate and conduct electrical impulses on its own
autonomic nervous system
the division of the peripheral nervous system that controls involuntary motor functions
bladder
the round, saclike organ of the renal system used as a reservoir for urine
blood pressure
the pressure caused by blood exerting force against the walls of blood vessels. Usually arterial blood pressure (the pressure in an artery) is measured
brachial artery
artery of the upper arm; the site of the pulse checked during infant CPR
bronchi(bronchus)
the two large sets of branches that come off the trachea and enter the lungs. There are right and left bronchi
buffer system
a system that helps manage the pH of the body to maintain it at a normal level
calcaneus
the heel bone
capillary
a thin-walled, microscopic blood vessel where the oxygen/carbon dioxide and nutrient/waste exchange with the body’s cells takes place
cardiac conduction system
a system of specialized muscle tissues that conducts electrical impulses that stimulate the heart to beat
cardiac muscle
specialized involuntary muscle found only in the heart
cardiovascular system
the system made up of the heart (cardio) and the blood vessels (vascular). Sometimes called the circulatory system
carotid arteries
the large neck arteries, one on ach side of the neck, that carry blood from the heart to the head
carpals
the wrist bones
central nervous system (CNS)
the brain and spinal cord
central pulses
the carotid and femoral pulses, which can be felt in the central part of the body
clavicle
the collarbone
coronary arteries
blood vessels that supply the muscle of the heart (myocardium)
cranium
the top, back, and sides of the skull
cricoid cartilage
the ring-shaped structure that forms the lower portion of the larynx
dermis
the inner (second) layer of skin, rich in blood vessels and nerves, found beneath the epidermis
diaphragm
the muscular structure that divides the chest cavity from the abdominal cavity; a major muscle of respiration
diastolic blood pressure
the pressure in the arteries when the left ventricle is refilling
digestive system
system by which food travels through the body and is digested, or broken down, into absorbable forms
dorsalis pedis artery
artery supplying the foot, lateral to the large tendon of the big toe
endocrine system
system of glands that produce chemicals called hormones that help to regulate many body activities and functions
epidermis
the outer layer of skin
epiglottis
a leaf-shaped structure that prevents food and foreign matter from entering the trachea
epinephrine
a hormone produced by the body. As a medication, it dilates respiratory passages and is used to relieve severe allergic reactions
exhalation
a passive process in which the intercostal (rib) muscles and the diaphragm relax, causing the chest cavity to decrease in size and air to flow out of the lungs
femoral artery
the major artery supplying the leg
femur
the large bone of the thigh
fibula
the lateral and smaller bone of the lower leg
gallbladder
a sac on the underside of the liver that stores bile produced by the liver
humerus
the bone of the upper arm, between the shoulder and the elbow
hypoperfusion
inability of the body to adequately circulate blood to the body’s cells to supply them with oxygen and nutrients; a life-threatening condition. Also called shock
ilium
the superior and widest portion of the pelvis
inhalation
an active process in which the intercostal (rib) muscles and the diaphragm contract, expanding the size of the chest cavity and causing air to flow into the lungs
insulin
a hormone produced by the pancreas or taken as a medication by many diabetics
involuntary muscle
muscle that responds automatically to brain signals but cannot be consciously controlled
ischium
the lower, posterior portions of the pelvis
joint
the point where two bones come together