Body Systems Part 2

Bones are organs made of _____________ tissue.

connective

Bones have a hard outer membrane and a soft center that contains ________________.

bone marrow

Bone marrow is a connective tissue that produces ______________.

blood cells

___________ bones are in your arms and legs.

Long

___________ bones are in your shoulders and hips.

Flat

____________ bones are in your fingers and toes.

Short

Bones are attached to each other in places called _____________.

joints

Your elbow and knee are ______________ joints.

hinge

____________ joints allow circular motion like a joystick. (Ex: hip)

Ball-and-socket

Your skull is an _____________________ joint.

immovable

The _________________ system supplies support for your body and protects your organs.

skeletal

__________________ connect bones to muscles.

tendons

_____________________ attach bones to each other.

ligaments

______________ muscles move bones and hold your skeleton upright.

Voluntary

_________ muscles contract slowly and move substances through the blood vessels and the digestive system.

Smooth

_____________ muscles make up the walls of the heart and pump blood.

Cardiac

The _____________ system carries signals to and from the brain

nervous

The ___________ nervous system is made up of the brain and spinal cord.

central

The __________ nervous system is made of sensory organs like the eyes and ears.

peripheral

Specialized cells called __________ transmit and receive nervous system signals.

neurons

Your senses have special nerve cells called ____________ which detect conditions in the body’s environment.

receptors

___________ are automatic responses to situations such as pain.

Reflexes