Lab quiz 5- post 9-11 & pre 12/13
8 bone make up the _______ which encloses and protects the brain
cranium
each muscle fiber is surrounded by thin connective tissue called
endomysium
Because the cells of skeletal muscle are relatively large and cylindrical in shape, they are known as ?
fibers
sutures which have irregular edges of bone joined by short fibers of connective tissue, are an example of_____
fibrous joints
the arm consists of one long bone the _______
humerus
bursa
Sac-like structures that reduce friction; NOT strictly part of synovial joints, cushion the movement of these body parts against one another, their walls consist of an outer fibrous membrane of thin, dense connective tissue lined by a synovial membrane located between the: -skin and bones -tendons and bones -muscles and bones -ligaments and bones. ex: shoulder and knee joints
femur
Strongest, heaviest and longest bone in the body is in the thigh
what structure produces synovial fluid
Synovial membrane in the synovial joint
the junction between an axon and a muscle fiber is called
neuromuscular junction
joint
A place in the body where two bones come together; provides movement
tendon
Attaches muscle to bone
the ________ or "knee cap" is a sesamoid bone that is found within the quadriceps tendon
patella
The ____________ is the more movable attachment of a tendon
insertion
the _______ girdle attaches the upper limb to the axial skeleton
pelvic
muscles that act on the _____ cause movement at the hip, knee, and foot joints
lower limb
the functional classification of joints is based on
amount of movement allowed by the joint
the hip joint is an example of a ___________ synovial joint
ball & socket
This two-headed muscle bulges when the forearm is flexed. It is the most familiar muscle of the anterior humerus. It is the __________.
biceps brachii
ligament
bone to bone or cartilage
the __________ referred to as breastbone, is a flat bone formed by the fusion of 3 bones: manubrium the body xiphoid process
sternum
cordlike structure that attaches muscle to bone
tendon
the _______ vertebrae articulate with the corresponding ribs
thoracic
the axial skeleton can be divided into the skull, the vertebral column, and ___________
thoracic cage
T/F: Every muscle of the body is attached to a bone or other connective tissue structure at two points.
true
T/F: muscles of facial expression differ from most skeletal muscles because they usually do not insert into a bone
true
each foot has a total of _____ bones
26
a prime mover, or ________, produces a particular type of movement
agonist
fontanelle
-is found only in the fetal skull -is a fibrous membrane -allows for compression of the skull during birth
movement of a limb away from the midline or median plane of the body in the frontal plane is known as
abduction
tendon sheath
protects all sides of a tendon and reduces friction at joints as they slide back and forth; tube-like bursae that wrap around certain tendons, formed by connective tissue and bone -the visceral layer(inner): attached to the surface of the tendon -the parietal layer (outer): attached to bone located: -wrist and ankles -fingers and toes -where tendons pass through synovial cavities ex: tendon of the biceps brachii muscle.
these abdominal muscles are responsible for "six packs". they also stabilize the pelvis when walking
rectus abdominis
the contractile unite of muscle is called
sarcomere