More systems
Unused muscles deteriorate at a rate of about
1% a day
How many long bones are in each arm?
3
The connective tissue holding the muscles of the lower back leg to the heel
Achilles tendon
A gland in the male reproductive system which contributes a secretion to the semen
Cowper's gland
One of the tubes taking the egg from the ovary to the uterus
Fallopian tube
The passageways which permit blood to circulate through bones are called __________canals.
Haversian
blood vessels
Haversian canal
Channels in bone that contain blood vessels
Haversian canals
Myofibrils contain two different proteins:
actin myosin
The chemical source of most of the body's energy
adenosine triphosphate
Bones associated with the arms and legs
appendicular skeleton
A disease which can cause inflammation, stiffness, and disfigurement of the joints is called
arthritis
Inflammation of joints
arthritis
Reproduction not involving the fusion of gametes
asexual reproduction
A condition of the muscles whereby they become weak from disuse is called
atrophy
The wasting away of tissue
atrophy
Central bones --the skull, spine and ribs
axial skeleton
TOOTH CAVITIES ARE CAUSED BY :
bacteria sugar acid gum disease
A sac filled with lubricant
bursa
Inflammation of a bursa
bursitis
Inflammation of the lubricating sacs of the joints is called
bursitis
The two primary substances associated with healthy bones are vitamin D and
calcium
Tooth decay; cavities
caries
Rubbery material that forms the extension of bones
cartilage
Part of the brain that coordinates movement
cerebellum
Segments of the DNA molecule which contain the genes for the traits
chromosome
Collar bone
clavicle
The pectoral girdle includes the ________ and the _______
clavicles scapulae
Muscular dystrophy is associated with:
degeneration of muscle cells
The bony inner substance of teeth
dentine
The hard outer covering of teeth
enamel
A narrow coiled structure attached to the testis which stores sperm
epididymis
A muscle that straightens a joint
extensor
The skeletal type which operates to straighten a joint is called a ________ and the type which bends a joint is called a ______
extensor flexor
The bones of the skull are fused together at birth.
false
The uvula is commonly known as the tonsils.
false
The long bone of the upper leg is the _____.
femur
Thigh bone
femur
Small bone in the lower leg
fibula
The two lower leg bones are called the _____ and the _____.
fibula tibia
A long whiplike structure used in movement
flagellum
A muscle that bends a joint
flexor
A reproductive cell which fuses to give rise to a zygote
gamete
Inflammation of the gums
gingivitis
Organ that produces gametes
gonad
The upper arm bone is the
humerus
Upper arm bone
humerus
One of the two upper wing bones of the pelvis
ilium
The most forward two teeth on the upper or lower mouth are:
incisors
The point where the muscle attaches to the more movable bone in the joint
insertion
Operate without your help
involuntary
The patella is a bone associated with the:
knee
Bone to bone connective tissue
ligament
Tough straps of connective tissue that hold joints together
ligament
Straps of connective tissue which holds bones together at the joints are:
ligaments
The mandible is the
lower jaw bone
The condition of paralysis is usually attributed to:
malfunction of the nervous system
Jaw bone
mandible
central hollow shaft
marrow cavity
Bone that holds the upper teeth
maxilla
The process that produces sperm and eggs by dividing the chromosome number in half
meiosis
Cell division that produces two identical daughter cells
mitosis
Birth defects that cause muscles to malfunction
muscular dystrophy
Components of a muscle
myofibrils
The muscle cells contain fibrous proteins called
myofibrils
One of the two proteins involved with muscle contraction
myosin
(Select all that apply.) Choose the parts of the body which incorporate cartilage.
nose trachea ears larynx
The point where the muscle attaches to the less movable bone in the joint
origin
The female gonad which produces eggs and some sex hormones
ovary
Top of the mouth
palate
Inability to move
paralysis
Knee cap
patella
The bones which support the bones of the arms.
pectoral girdle
The bones which support the bones of the legs.
pelvic girdle
Advanced disease of the soft tissues that support the teeth
peridontitis
Protective covering of bone
periosteum
The thin tissue that covers bone
periosteum
A viral infection of the spinal cord that produces paralysis
poliomyelitis
The function(s) of the sternum is(are) to:
protect the heart connect the ribs
The bone that joins the two halves of the pelvis in front
pubis
The nerve fibers and blood vessels of a tooth are located in the:
pulp cavity
The portion of a tooth that gives you pain when the dentist drills your teeth is called the
pulp cavity
A forearm bone
radius
The production of blood cells is associated with:
red marrow
makes blood cells
red marrow
The bone that forms the lower end of the spine and joins the pelvis in the back
sacrum
Shoulder blade
scapula
Match the muscles and their associations. involuntary voluntary electrical nodes tendons digestive tract arteries extensors
smooth skeletal cardiac skeletal smooth smooth skeletal
Overactive, uncoordinated muscles
spasticity
(Select all that apply.) Choose from the following the primary functions of the skeletal system.
support movement protection production of blood cells
muscle to muscle connective tissue
tendon
Large bone in the lower leg
tibia
Lymph nodes at the back of your mouth
tonsil
The two bones of the lower arm are the
ulna and radius
Fleshy projection hanging down from the back of the soft palate
uvula
vertebrae, The bones of the spine
vertebra
The bones that enclose the spinal cord are called the
vertebrae
Under your conscious control
voluntary
The third molar at the back of the mouth is called the ______ tooth.
wisdom
fat cells
yellow marrow