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