What is the primary function of joints in the human body?

Joints allow us to bend and move our body parts, enabling various types of movement.

Fill in the blank: A ball and socket joint allows movement in ___ directions.

All

True or False: Fixed joints allow for movement between the bones they connect.

False. Fixed joints are immovable and do not allow movement.

What type of joint is exemplified by the elbow and what movement does it allow?

The elbow is a hinge joint, allowing back-and-forth movement.

Riddle: I help you twist and turn, but I can’t make a full circle. What am I?

A pivotal joint.

The joint between the upper arm and the shoulder is an example of a ___ joint.

Ball and socket

What type of movement do hinge joints primarily permit?

Hinge joints permit back-and-forth or swinging motion.

What is the structure of a pivotal joint and its movement characteristics?

A pivotal joint consists of a cylindrical bone rotating within a ring-shaped bone, allowing limited rotational movement.

True or False: The knee is an example of a ball and socket joint.

False. The knee is a hinge joint.

The rib cage is primarily composed of the ribs, sternum, and ___ for protection.

Vertebrae

What is the primary function of the backbone?

To support the body and allow movement due to its flexible, segmented structure.

True or False: The pelvic bones help in the support of the upper body.

False. The pelvic bones support the weight of the upper body and provide attachment for the legs.

Fill in the blank: The shoulder bones are located at the ___ and support arm movement.

Back

Riddle: I am made of many small bones and allow bending and twisting. What am I?

The backbone (spine)

How many pairs of ribs are found on each side of the chest?

12 pairs

What type of tissue is described as softer and more flexible than bone and can be found in joints?

Cartilage

The skull serves what function in relation to the brain?

It encloses and protects the brain.

Fill in the blank: The bones in the wrist are called ___ and provide flexibility.

Carpals

What unique feature assists the earthworm in movement?

The earthworm secretes a slimy substance and uses tiny bristles under its body to grip the ground.

Fill in the blank: The snail's shell is its outer skeleton, but it is not made of ___.

Bones

True or False: Cockroaches can walk, but they cannot fly.

False: Cockroaches can walk, climb, and fly.

What adaptations do birds have that facilitate flight?

Birds have hollow and light bones, which reduce body weight, making flight easier.