A&P 1.15 Flashcards Preview

Anatomy & Physiology I > A&P 1.15 > Flashcards

Flashcards in A&P 1.15 Deck (39)
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1

Flexor carpi radialis

A, O, I

Named for action and location

A: flexion of wrist and Abduction of wrist (towards radius)

I: base of 2nd and 3rd metacarpal

O: medial epicondyle of humerus via the flexor tendon

2

Epi

Define

On top

3

Metacarpals

3 parts

Base

Shaft

Head

4

Flexor carpi radialis

Tendon that runs through the carpal tunnel

deep to the flexor retinaculum

5

Extensions originate on

the lateral epicondyle

6

Flexors originate on

Medial epicondyle

7

Radial versus ulnar deviation

Radial is abduction

Ulnar is adduction

8

Review of bone types

5

Long
Short
Flat
Irregular
Sesamoid

9

Bone regions - long bones

Diaphysis
Epiphysis
Metaphysis

10

Diaphysis

Shaft (body)

11

Epiphysis

Ends of long bone

12

Metaphysis

In between diaphysis and epiphysis

Long bone growth happens here

13

Coverings - long bone

Periosteum
Articular cartilage

14

Periosteum

Sleeve like membrane around diaphysis

15

Articular cartilage

Hyaline covering over joint surfaces of epiphysis

16

Cavities - long bones

Medullary cavity

Endosteum

17

Medullary cavity

Tube-like hollow space within diaphysis

Child - red bone marrow, filled with blood cells

Adult - yellow bone marrow, filled with fat

17

endosteum

lining of the medullary cavity

18

Yellow bone marrow

Contains adipose tissue
Fat storage for energy
More prevalent in adults

19

Red bone marrow

Contains blood cells
Produces blood cells (hematopoiesis)
More prevalent in children (changes around age 5)

20

Bone tissue

General

Hard connective tissue
Osseous tissue

It has a tensile strength nearly equal to iron but less than 1/3 the weight

21

Types of bone cells


4

Osteogenic
Osteoblasts
Osteoclasts
Osteocytes

22

Bone tissue matrix

Fibers - collagen (body's most abundant protein

Ground substance : calcium, phosphate (mineral salts)

Water

23

Osteogenic

Bone creating

Stem cells

Found in the endosteum and lining of the Haversian canals

Undergo cell division to form osteoblasts

24

Osteoblasts

Bone builder

Daughter cells of osteogenic cells

Build create bone

Secrete bone matrix and collagen fibers

25

Osteoclast

Bone breaks down or cuts down

Opposite of osteoblasts

Cuts down bone to release minerals

26

Osteocyte

Bone cell

Mature bone cell (grown up osteoblast)

Maintains bone tissue

27

Functions of bone tissue

5

Support: framework
Protection: encloses delicate structures
Movement: via levers
Mineral storage and homeostasis: reservoir for calcium and phosphorus
Hematopoiesis : blood cell production (bone marrow yellow and red)
Yellow - energy storage

28

Bone growth length

until bone growth in length is complete, a layer of cartilage known as the epiphyseal growth plate remains

29

Osteogenesis

Bone formation

The combined action of osteoblasts and osteoclasts that makes the bones into their adult shape