THE HUMAN BODY Vocabulary Unit II achilles tendon, involuntary muscle joint ligament marrow muscle...

THE HUMAN BODY Vocabulary Unit II

achilles tendon, involuntary muscle

joint ligament

marrow muscle

nerves reflex

voluntary muscle x-ray

achilles tendon

a tendon at the back of the ankle that connects the calf muscles and the heel; named after the mythical Greek hero Achilles

involuntary muscle

a muscle that you cannot consciously move

joint

the point where two bones meet

ligament

tissue that connects a bone to other bones or to cartilage and helps to support joints

marrow

a tissue that fills many bones and makes most blood cells, including disease-fighting white blood cells

muscle

tissue that works with the skeleton to make movement possible

nerves

the specialized cells or bundled fibers that send signals from one body part to another

Yellow part are nerves

reflex

involuntary movements as a result of unexpected stimulus

grasp reflex

voluntary muscle

a muscle that you can consciously move

x-rays

waves that can be used to take an image of and observe the condition of bone and, in some instances, tissue