Histology

Question 1

skeletal muscles are multi-nucleated?

Answer 1

yes

Question 2

how are skeletal muscles fibres organised?

Answer 2

in fascicles

Question 3

match epimysium, perimysium and endomysium with the tissue they surround

Answer 3

epimysium: whole muscle
perimysium: single fascicle
endomysium: singular muscle fibre

Question 4

recap: skeletal muscle

Answer 4

actin & myosin= sarcomeres= myofibrils
1 motor neurone innervates group of muscle fibres with each branch of motor neurone synapsing at NMJ
types of fibre: T1, T2a, T2b

Question 5

rundown of cartilage?

Answer 5

semi-rigid, permeable and avascular

Question 6

what cell does cartilage contain?

Answer 6

chondrocytes

Question 7

3 types of cartilage?

Answer 7

hyaline, elastic, fibrocartilage

Question 8

which cartilage has T2 and T1 collagen?

Answer 8

hyaline- T2

fibrocartilage- T1

Question 9

rundown of bone?

Answer 9

rigid, non-permeable, vascular

Question 10

how do bone cells receive nutrients?

Answer 10

blood

Question 11

composition of bone?

Answer 11

bioapatite, collagen, water, non-collagen proteins

Question 12

two main aspects of bone?

Answer 12

epiphysis: growth plate, at ends
diaphysis: shaft

Question 13

epiphysis has _____ bone

Answer 13

trabecular bone

Question 14

diaphysis has _____ bone

Answer 14

cortical

Question 15

T/F: cortical bone is more spongey

Answer 15

False: trabecular bone is much more spongey

Question 16

fill out the following…

1. osteroprogenator – forms ____
2. _____ – form bone
3. _____ – cells of bone matrix
4. osteoclasts – ___ _______

Answer 16

1. osteroprogenator – forms osteoblasts
2. osteoblasts – form bone
3. osteocytes – cells of bone matrix
4. osteoclasts – bone resorption

Question 17

what do osteoblasts secrete to help with bone mineralisation?

Answer 17

collagen, GAGs, proteoglycans, osteoid (other bone component)

Question 18

what are the 2 types of bone?

Answer 18

lamellar: layered collagen oriented in 1 direction
woven: collagen laid down haphazardly