Skeletal System Master Deck

Skeletal System

is made of

bones

Bone

is ________ that includes

• _________

• _________

Bone

is calcified connective tissue that includes

• collagen protein fibers

• calcium phosphate

Bones

meet at

joints

bone to bone

attachment through

ligament

muscle to bone

attachment through

tendon

4 Major Types of bones?

• Long

• Short

• Flat

• Irregular

Long Bones

are found in our

• arms

• legs

• fingers + toes

Long Bones

examples?

• Humerus

• Ulna

• Radius

• Femur

• Tibia

• Fibula

• metacarpals , metatarsals , phalanges

💡 TEAS Tip: Arms + legs (including fingers & toes!)

Long Bones

shape?

longer than they are wide

Long Bones

all have

• Shaft ( diaphysis )

• 2 enlarged ends ( epiphysis )

2 Enlarged Ends

what are they called?

• Proximal End ( epiphysis )

• Distal End ( epiphysis )

  

Short Bones

examples?

• wrists ( carpals )

• ankles ( tarsals )

💡 TEAS Tip: Short = Small & Square-y (wrist & ankle gang)

Short Bones

shape?

equal in length and width

Flat Bones

examples?

• ribs

• sternum

• scapula

• cranial bones

💡 TEAS Tip: Think armor plates ( protecting organs under )

Flat Bones

shape?

• thin

• often curved

Irregular Bones

example?

• vertebrae ( spine )

• pelvis

💡 TEAS Tip: If it’s funky-looking, it’s probably irregular 😎

Irregular Bones

shape?

a variety of shapes

• not symmetrical

( they don’t fit into the other categories )

2 Types of Bone Tissue?

• Compact Bone Tissue

• Spongy Bone Tissue

Compact Bone

structure

• hard

• heavy

Compact Bone

is made of

osteons

Compact Bone

provides

• protection

• support

Compact Bone

makes up the

• _____ of long bones

• _____ of other bones

• shaft of long bones

• flat surfaces of other bones

Spongy Bone

structure?

• Porous

• Lightweight

Spongy Bone

is made of

trabeculae

Spongy Bone

makes up the

• _____ of long bones

• _____ of other bones

• ends ( epiphysis ) of long bones

• center of other bones

Spongy Bone supports

Bone Marrow

( soft tissue )

Red Bone Marrow

produces

blood

• red blood cells

• white blood cells

• platelets

= hematopoiesis

Yellow Bone Marrow

stores ______ as ______

stores energy as fat

review

What protein fiber makes up bone tissue?

collagen

Brittle Bone Disease

is also known as

Osterngensis Imperfecta

_{( sidenote: this is NOT the same as osteoporosis )}

osteoblasts ______ the bone matrix

osteoblasts make ( build ) the bone matrix

osteocytes _______ and _______ bone

osteocytes maintain and monitor bone

osteoclasts _____ _____ the bone matrix

osteoclasts break down the bone matrix

osteons are the _______ of ______ bone

osteons are the structural unit of compact bone

osteons have a _____ as a passage for blood vessels and nerves

osteons have a central canal as a passage for blood vessels and nerves

osteons are made of rings called

lamellae

the space between each ring ( and where osteocytes live ) is called the

lacunae

Bone Remodeling

_______ detects stress, fractures, or old bones in need for remodeling

Osteocytes detect stress, fractures, or old bones in need for remodeling

Osteocytes signal

• _____

• _____

• Osteoclasts

• Osteoblasts

Osteoclasts will do the process of

Resorption

Resorption of Bone

Osteoclasts will _____ the bone matrix and release it’s ______ into the _____

Osteoclasts will break down the bone matrix and release it’s calcium phosphate into the blood

Osteoblasts will then _____ the bone matrix

Osteoblasts will then rebuild bone matrix

★ bone resorption helps body maintain __________!!

blood calcium levels!!

for

• muscle contraction

• neuron communication

• etc.

Brittle Bone Disease

results from a

mutation in the gene that codes for collagen

Brittle Bone Diseases

causes bones to be

• very fragile

• break easily

what system provides movement for the skeletal system?

muscular system

muscular system and skeletal system

work together through communication with the

nervous system