chapter 27 locomotor systems

Question 1

what is ossification

Answer 1

human adult skeleton is made up of bone which develops throughout childhood from cartilage produced in the fetus

Question 2

what is a ligament, what is a tendon

Answer 2

ligament–»connect bone to bone to form a movable framework

tendon–»flexible but inelastic cord of strong fibrous collagen tissue attaching a muscle to a bone

Question 3

what is a joint, what are the parts of a joint

Answer 3

–»a place where two bones meet—

–»the space between the bones is filled with synovial fluid; which cushions and lubricates the joint and eases the gliding of bones across each other – the fluid is kept in place by the surrounding synovial membrane

Question 4

what are the three types of muscle cells, which muscles are voluntary, which are involuntary

Answer 4

skeletal muscle [voluntary]
cardiac muscle [involuntary]
smooth muscle [involuntary]

Question 5

what is the functional unit of contraction in skeletal muscle cells

Answer 5

sarcomeres