7th Grade Science-Human Body Systems

Which of the following is made up of cells that can contract and relax? 

• skeletal tissue 
• muscle tissue 
• connective tissue
• nervous tissue 

The organ system that provides support and protection for body parts is the 

• endocrine system 
• circulatory system 
• skeletal system 
• respiratory system 

The epidermis is composed of 

• dermis 
• epithelial tissue 
• connective tissue 
• true skin 

The fixed point in a lever is the 

• effort 
• load 
• fulcrum 
• mechanical advantage 

Muscles cause bones to move when

• the muscles stretch 
• the muscles grow between bones 
• the muscles pull on bones 
• the muscles push bones apart 

Ligaments are the connective tissue that attaches 

• bones to muscles 
• bones  to other bones 
• muscles to other muscles 
• muscles to dermis 

Which type of muscle always straightens a part of your body when it contracts? 

• resistance 
• flexor 
• involuntary 
• extensor

Mature bone is composed of hard_________ tissue

• connective 
• epithelial 
• cartilage 
• skeletal 

Which of the following is a true statement about joints 

• The knee is a ball-and-socket joint
• The spinal column contains no joints 
• The skull contains joints 
• They are kept together by elastic bands called tendons 

A mole is more likely to be cancerous if it 

• remains the same size 
• has two halves that do not match 
• forms inside a hair follicle 
• contains dead, keratin-filled cells