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IB Exam Review Unit 1

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

#1
Front (Question)

What are the functions of the skeletal system? (4)

Back (Answer)

• protection of vital organs • support or maintenance of posture • providing attachment points for the muscles • storage/release of minerals

#2
Front (Question)

How many types of vertebrae are there?

Back (Answer)

5

#3
Front (Question)

What are the types of vertebrae? (5)

Back (Answer)

• cervical • thoracic • lumbar • sacral • coccyx

#4
Front (Question)

Cervical Vertebrae

Back (Answer)

smallest and most movement

#5
Front (Question)

Thoracic Vertebrae

Back (Answer)

less mobile because ribs attach to side of the vertebra

#6
Front (Question)

Lumbar Vertebrae

Back (Answer)

largest and responsible for weight bearing

#7
Front (Question)

Sacral Vertebrae

Back (Answer)

transmits weights from the body to the pelvis and the legs

#8
Front (Question)

What are the functions of the axial skeleton? (3)

Back (Answer)

• provides protection • support • attachment sites for muscles

#9
Front (Question)

What are the components of the pelvic girdle? (3)

Back (Answer)

• ilium • ischium • pubis

#10
Front (Question)

What is the function of the appendicular skeleton?

Back (Answer)

movement

#11
Front (Question)

What is the function of the humerus?

Back (Answer)

attaches muscles for movement of arm, hand, and elbow

#12
Front (Question)

What is the function of the patella?

Back (Answer)

helps leg extension and protect knee joint

#13
Front (Question)

What are features of long bones? (4)

Back (Answer)

• longer than wide • work as levers • have long cylindrical shafts with enlarged ends • are essential for movement

#14
Front (Question)

What are features of short bones? (3)

Back (Answer)

• small, compact, and cube shaped • articulate with more than one bone • provide stability

#15
Front (Question)

What are features of flat bones? (3)

Back (Answer)

• curved, flat surfaces • protect organs • allow muscle attachment

#16
Front (Question)

What is a feature of irregular bones?

Back (Answer)

they have varied size, shape, and surface area

#17
Front (Question)

What is the composition of bone? (4)

Back (Answer)

• contains several layers • ends have cartilage for shock absorption • red marrow inside end of bones • yellow marrow inside of middle of bones

#18
Front (Question)

Spongy Bone

Back (Answer)

resists stress of weight and changes in posture, contains red marrow

#19
Front (Question)

Red Bone Marrow

Back (Answer)

produces blood cells

#20
Front (Question)

Epiphysis

Back (Answer)

ends made of spongy bone

#21
Front (Question)

Articular Cartilage (2)

Back (Answer)

• reduces friction • provides shock absorption

#22
Front (Question)

Diaphysis (2)

Back (Answer)

• middle region made of compact bone • resists bending forces

#23
Front (Question)

Compact Bone

Back (Answer)

solid, dense bone to provide protection and support

#24
Front (Question)

Periosteum

Back (Answer)

white membrane that provides nutrients & cells for growth after fracture