2 Flashcards
maxillae bones
two bones that form the upper jaw
venules
small veins that connect the capillaries to larger veins
lymph nodes
glandlike structures that filter bacteria, viruses, and cancer cells and are connected by lymph vessels
motor nerves
also known as efferent nerves; carry impulses from the brain to the muscles or glands; these transmitted impulses produce movement
skeletal system
forms the physical foundation of the body and iscomposed of 206 bones that vary in size and shape; connected by movable and immovable joints
temporalis
located near the temple that opens and closes the jaw
metatarsals
five long, slender bones, similar to the metacarpal bones of the hand
glands
produce and release substances that perform a specific function in the body
arterioles
small arteries that deliver blood to capillaries
abductor hallucis
foot muscle that moves the big toe away from the other toes
frontal bone
bone that forms the forehead
spinal cord
is the portion of the central nervous system that originates in the brain and extends down to the bottom of the spine
tibia
also called the shinbone, it’s the larger of the two leg bones below the knee on the big toe side that supports most of the body’s weight
flexor digitorum brevis
foot muscle that flexes the toes and helps maintain balance while walking and standing
corrugator
small muscle located between the eyebrows just below the frontalis;draws the eyebrow down and wrinkles the forehead vertically
abductor digiti minimi
foot muscle that allows the little toe to flex and move
catabolism
process of breaking complex molecules down into simple molecules; releases energy
trapezius
muscle that covers the back of the neck and upper and middle regions of the back; lifts and turns the head, raises the shoulders, and controls swinging movements of the arm
tissue
group of similar cells that perform a specific function
nucleus
specialized structure at the center of the cell; controls growth and reproduction of the cell and contains the cell’s genetic material
extensor hallucis longus
muscle that extends the big toe and flexes the foot
endocrine glands
also known as ductless glands; include the pituitary, thyroid, and adrenal glands, as well as other glands that release hormones directly into the bloodstream
mentalis
muscle at the tip of the chin that elevates the lower lip and raises and wrinkles the skin of the chin
pulmonary circulation
system that takes oxygen-poor blood to the lungs for oxygenation and waste removal then returns that blood to the heart (left atrium) so oxygen-rich blood can be delivered to the body
external jugular vein
located at the side of the neck, it carries blood returning to the heart from the head, face, and neck
parietal bones
two bones that form the sides and top of the cranium
bicep
muscle that produces the contour of the front and inner side of the upper arm; lifts the forearm and flexes the elbow
belly
middle part of the muscle
nasal bones
two bones that form the bridge of the nose
circulatory system
also known as cardiovascular system or vascular system, controls the body’s steady circulation through the heart and blood vessels
cytoplasm
watery fluid that surrounds the nucleus; provides structure for cell parts to move within the cell membrane; enzymes in the cytoplasm help digest and break down other molecules for food
blood
fluid that travels through the circulatory system to supply oxygen and nutrients to cells and tissues and to remove carbon dioxide and waste from them
lymph
clear or pale yellow fluid that contains white blood cells and travels through lymph vessels
pronator
muscle that turns the hand inward so the palm faces downward
buccinator
muscle of the cheek between the upper and lower jaw that compresses the cheeks and expels air between the lips
integumentary system
body system consisting of skin and its accessory organs, such as the oil and sweat glands, sensory receptors, hair, and nails, it serves as a protective covering and helps regulate the body’s temperature
exocrine glands
also known as duct glands; include the sebaceous and sudoriferous glands, as well as others, and produce a substance that travels through small tubelike ducts
heart
muscular, cone-shaped organ that keeps the blood moving within the circulatory system
common carotid arteries
main arteries on both sides of the neck that supply blood to the head, face, and neck
extensors
muscles that extend and straighten joints such as the wrist, hand, and fingers to form a straight line
occipital bone
located below the parietal bones forming the back of the skull above the nape
tarsals
seven irregularly shaped bones in the ankle area including the talus, calcaneus (heel), navicular, cuboid, and three cuneiform bones
levator anguli oris
muscle that raises the angle of the mouth and draws it inward
opponens
muscle that allows the thumb to be moved toward a finger of the same hand
anabolism
process of simple molecules combining to form a complex molecule; requires energy
ethmoid bone
seperates nasal cavity from the brain
nerve tissue
carries messages to and from the brain and controls and coordinates all bodily functions
sternocleidomastoideus
neck muscle that lowers and rotates the head; originates at the clavicle and inserts at the temporal bone near the ear
autonomic nervous system (ANS)
part of the nervous system that controls involuntary muscle action and regulates the action of the smooth muscles, glands, blood vessels, heart and breathing
phalanges
also known as digits; bones of the fingers or toes; there are twenty-eight in the fingers (three in each finger and two in each thumb); there are fourteen in the toes (two in each big toe and three in each smaller toe)
masseter
originates at the lower part of the zygomatic; moves the mandible, causing the mouth to close
fibula
located on the little-toe side of the lower leg; smaller of the two leg bones below the knee
external carotid artery
supplies blood to the anterior parts of the scalp, ear, face, neck, and sides of the head
brain
one of the body’s most complex organs that controls all the body’s functions
cervical vertebrae
seven bones located below the skull; provide support, structure and flexibility to the neck
supinator
Forearm muscle that rotates the radius outward and the palm upward
joint
connection between two or more bones
metacarpus
five bones, or metacarpals, of the palm located between the carpus and phalanges
body systems
also known as systems; groups of body organs acting together to perform one or more functions
metabolism
chemical process by which cells convert nutrients to energy
flexor
extensor muscle of the wrist involved in flexing or bending itit
myology
study of the structure, functions, and diseases of the muscular system
organs
groups of specialized tissues designed to perform specific functions
deltoid
large, triangular muscle covering the shoulder joint that allows the arm to extend outward and to the side of the body
capillaries
tiny blood vessels that connect the smaller arteries to the venules, bring nutrients to the cells, and carry away waste materials
gastrocnemius
muscle attached to the lower rear surface of the heel that pulls the foot down
epicranius
broad muscle that covers the top of the skull and consists of the occipitalis and frontalis; also called occipitofrontalis
systemic circulation
system that carries oxygen-rich blood from the heart throughout the body and returns oxygen-poor blood back to the heart; also known as general circulation
scapula
also called the shoulder blade; large, flat, triangular bone of the shoulder; there are two scapulae
cell membrane
thin layer of tissue that surrounds the cell; it protects the interior of the cell from its surroundings and is semipermeable, meaning it allows certain substances to enter the cell
extensor digitorum longus
muscle that bends the foot up and extends the toes
protoplasm
makes up a cell; contains nutrients, mineral salts, and water
muscle tissue
contracts and moves various parts of the body
levator palpebrae superioris
thin muscle that controls the movement of the eyelid
peripheral nervous system (PNS)
system of nerves connecting the peripheral (outer) parts of the body to the central nervous system; has both sensory and motor nerves, carries impulses to and from the CNS
zygomaticus major
muscle that extends from the zygomatic bone to the angle of the mouth; directs the lip outward and upward when laughing or smiling
procerus
muscle that covers the bridge of the nose, lowers the eyebrows, and causes wrinkles across the bridge of the nose
epicranial aponeurosis
tendon that connects the occipitalis and frontalis muscles
tibialis anterior
muscle covering the front of the shin that bends the foot upward and inward
zygomaticus minor
muscle that works with the zygomaticus major to make facial expressions
muscular system
body system that covers and holds the skeletal system in place and moves various body parts
platysma
broad muscle extending from the pectoral and deltoid muscles to the side of the chin; responsible for lowering the lower jaw and lip
lacrimal bones
two small, thin bones located in the front inside wall of the eye sockets (orbits)
mastication
medical term for chewing
skull
skeleton of the head; divided into two parts called the cranium and facial skeleton
neurology
study of the structure, function, and pathology of the nervous system
risorius
muscle at the corner of the mouth that draws it out and back, as when grinning
flexor digiti minimi
foot muscle that moves the little toe
temporal bones
two bones forming the sides of the head in the ear region
aorta
largest artery in the body
internal carotid artery
supplies blood to the brain, eyes, eyelids, forehead, nose, and internal ear internal jugular vein located at the side of the neck to collect blood from the brain and parts of the face and neck
mandible
largest and strongest bone of the face that forms the lower jaw
patella
also known as kneecap; forms the kneecap joint
orbicularis oculi
ring muscle of the eye socket that closes the eyelids and assists in pumping tears
cells
basic units of all living things
ulna
inner and larger bone in the forearm located on the side of the little finger
radius
smaller bone in the forearm on the same side as the thumb
sensory nerves
also known as afferent nerves, they carry messages from the sense organs (heat, cold, sight, sound, smell, taste) to the brain and spinal cord
talus
also called the ankle bone; located between the heel, tibia, and fibula
levator labii superioris
muscle that surrounds and elevates the upper lipand dilates the nostrils, as when expressing distaste
arteries
thick-walled flexible tubes that carry oxygenated blood away from the heart to the arterioles
lymphatic system
body system that helps defend against infection and includes lymph, lymph nodes, thymus gland, spleen, and lymph vessels
hyoid bone
U-shaped bone at the base of the tongue that supports it and its muscles; the only bone of the throat
abductors
muscles that draw a body part away from the midline of the body;separate the fingers in the hand
connective tissue
fibrous tissue that binds and supports other body tissues and organs
nervous system
well organized body system composed of the brain, spinal cord, and nerves; controls and coordinates all other body systems
peroneus longus
muscle that covers the outer side of the calf, inverts the foot, and turns it outward
tricep
large muscle covering the entire back of the upper arm that extends the forearm and straightens the elbow
occipitalis
back (posterior) portion of the epicranius; muscle that draws the scalp backward
cranium
oval, bony case consisting of eight bones that protect the brain
soleus
muscle that originates at the upper portion of the fibula and bends the foot down
epithelial tissue
provides a covering that protects the body and is found within many parts of the body such as skin, mucous membranes, digestive and respiratory organs, the lining of the mouth, the lining of the heart, and the glands
insertion
movable part of the muscle anchored to the bone; attached farthest from the skeleton
zygomatic bones
also known as cheekbones or malar bones (may-lur bohns); they form the prominence of the cheeks and the outer part of the eye socket
adductors
muscles that draw a body part toward the midline of the body; draw the fingers together in the hand
veins
thin-walled blood vessels that are less elastic than arteries and carry blood containing waste products to the heart and lungs for cleaning and to pick up oxygen; contain cuplike valves that keep blood flowing in one direction to the heart and prevent blood from flowing backward
osteology
the study of bones
endocrine system
body system consisting of a group of specialized glands that control the growth, development, reproduction, and health of the entire body
mitosis
process of cell reproduction that occurs when the cell divides into two identical daughter cells
carpus
also known as the wrist; flexible joint composed of eight small, irregular bones called carpals
central nervous system (CNS)
controls voluntary muscle actions and consists of the brain, spinal cord, spinal nerves, and cranial nerves
reflex
automatic reaction that involves sending an impulse from a sensory receptor along the sensory nerve to the spinal cord
clavicle
also known as collarbone, it joins the sternum and scapula
hormones
chemical substances such as insulin, adrenaline, and estrogen that stimulate activities in the body
anatomy
also called gross anatomy, is the study of human body structures, how the body parts are organized, and the science of the interconnected structure of organisms, or of their parts.
blood vessels
tubelike structures that circulate blood throughout the body including arteries, arterioles, capillaries, venules, and veins
orbicularis oris
muscle that circles the mouth andcontracts, puckers, and wrinkles the lips
depressor labii inferioris
muscle that surrounds and lowers the lower lip and draws it to one side, as when expressing sarcasm; also known as quadratus labii inferioris
frontalis
front (anterior) portion of the epicranius; scalp muscle that raises the eyebrows, draws the scalp forward, and causes wrinkles across the forehead
physiology
study of the functions and activities performed by the body’s structures
triangularis
muscle at the corner of the lip that extends over the chin and pulls down the corners of the mouth when frowning
nerves
whitish bundles of nerve fibers that transmit impulses
origin
part of the muscle that does not move and is anchored to the bone; attached closest to the skeleton
peroneus brevis
muscle that originates on the lower surface of the fibula and bends the foot down and out
humerus
uppermost and largest bone in the arm, extending from the elbow to the shoulder
sphenoid bone
forms base and sides of the skull
facial skeleton
framework of the face; composed of 14 bones
