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Flashcards in Chapter 5 - Skeletal Sys Deck (40)
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1

What are the structure of the bone ?

1. Diaphysis (the shaft/body, the long portion of the bone)
2. Epiphyses (ends of the bone)
3. Metaphyses (the region between the Diaphyses and
Epiphyses and contains the epiphyseal growth plate and
epiphyseal line.

2

The shaft of the bone is called ----------

Diaphysis which is the longest portion of the bone

3

The ends of the bone called ----------

Epiphysis

4

It contains the growth epiphyseal growth plate / epiphyseal line----------

Metaphyses

5

A -------------area within the--------of a growing bone called the Epiphyseal growth plate. Once the growth stops , what remains is the ----------

- Cartilaginous
- Metaphysis
- Epiphyseal line

6

---------a thing layer of hyaline cartilage covering the epiphyseal.

- Articular Cartilage

7

What is Periosteum?

It is a tough CT /fibrous tissue covering that surrounds the bone

8

The Periosteum function is to protect, ---------- and --------bones

- nourish
- heal bones

9

Periosteum acts as an attachment for ----------and -----------

- tendons
- ligaments

10

Periosteum is very well vascular , lots of blood supplies?
True or False

True

11

The medullary cavity aka.............?

marrow cavity

12

Medullary cavity is a space that is located within --------- and it contains 1. ------------- for --------------
2. -------------for -----------------

- Diaphysis
1. red marrow , blood cell formation
2. yellow marrow , fat storage

13

Popular location for the Medullary Cavity in the body :
1.---------2.----------3.----------4.----------5.----------
6.------------7.----------

1. Ribs
2. Sternum
3. Spine
4. Proximal of Humerous
5. Femur
6. Pelvis
7. Scalp

14

What is EPO?

Erythropoietin (EPO) is a hormone produced by the kidney that promotes the formation of red blood cells by the bone marrow.


The kidney cells that make erythropoietin are sensitive to low oxygen levels in the blood that travels through the kidney. These cells make and release erythropoietin when the oxygen level is too low. A low oxygen level may indicate a diminished number of red blood cells (anemia), or hemoglobin molecules that carry oxygen through the body.

15

erythropoietin stimulates the bone marrow to produce more red blood cells. The resulting rise in red cells increases the oxygen-carrying capacity of the blood? True or False

True

16

As the prime regulator of red cell production, erythropoietin's major functions are to ;

1.Promote the development of red blood cells.

2.Initiate the synthesis of hemoglobin, the molecule within red blood cells that transports oxygen.

17

What are the functions of the bone ?

1. Protection
2. Support
3. Movement
4. Mineral homeostasis
5. Blood cell production (hemapoiesis/ hematopoiesis)
6. Storage

18

The bone is very well vascularized ? True or False

True

19

1. Metaphyseal arteries supply the ------?
2. Epiphyseal arteries supply the --------?
3. nutrient arteries enter the ----------- via the -------- ---------to supply the inner --------bone, -------bone, ------bone marrow.
4. ------ ------- enter the ---------- at multiple points (Volkmann's canals) to supply the --------- and outer -------- bone.

1. Metaphysis
2. Epiphysis
3. Diaphysis, nutrient, foramen, compact, spongy, red, marrow.
4. Periosteal arteries, Diaphysis, periosteum, compact.

20

Bone growth / Aging
1) Bone is in a constant state of --------

1) remodeling

21

Bone growth / Aging
From birth to adolescence, bone growth is ------ than bone -----

greater, loss

22

Bone growth / Aging
In young adults, bone ------ is equal to bone -----

growth, loss

23

from middle age, bone --------exceeds bone --------

loss, growth

24

long bones lengthen through growth at the -------- growth ---------, and they get thicker by Osteo------ in the-----------laying a new bone at the periphery.

Epiphyseal growth plate, blasts, periosteum

25

Specialized contractile organelles of the muscle cell called --------------, It is sized measured in ----------

Myofibrils
Um in diameter

26

Myofibrils are held in place by --------- ---------

cytoskeletal proteins

27

----------- ----------------- is a fluid filled tubes and sacs running along and surrounding each ------, they store and release------------into the cell (when it's needed)

Sacro plastic reticulum
Myofibril
calcium

28

-------------contain a number of sacro merges arranged in series (end to end)

Myofibrils

29

The functional unit of a Myofibril (of contraction) is -----------

Sarcomere

30

The Sarcomere contains 2 contractile protein;

1) Actin
2)Myosin