T3 Tissues and Body Systems Flashcards
(139 cards)
What are the proteins of desosomes?
Desmoglein and desmocollin
What stimulates and inhibits oestoclast activity?
Parathyroid hormone and calcitonin respectively
Which gland releases secretions by whole cell release?
Holocrine, sebaceous glands of skin
What is in the middle of the diaphysis?
Bone marrow
What is the concentration of plasma K+?
4 mmol
What happens in the zone of resting cartilage?
This zone contains normal, resting hyaline cartilage.
What is a collagen fibril formed of?
A repeated pattern of tropocollagen with cross links
What are melanocytes derived from?
Neural crest cells
What is found in the stratum granalosum (granular cell layer)?
Keratinocyte granules
Zone of calcification
In this zone, chondrocytes are either dying or dead, leaving cavities that will later become invaded by bone-forming cells.
What do serous membranes consist of?
Mesothelium
What is osteogenesis imperfecta?
A collagen disorder causing brittle bones which is more severe when the mutation is nearer the C terminal of the amino acid
What is a normal Hb count?
120g/L
What are proteoglycans?
GAGs that bind to hyaluronan forming bottle brush structure
What is the concentration of intracellular Ca+?
100 nmol
Where is ciliated columner epithelium with goblet cells found?
Respiratory system
What is a normal WBC count?
5-10 X 10^9/L
Which connective tissue contains significant chondroitin sulphate?
Cartilage
What is the concentration of intracellular Ca+?
100 nmol
What is found in the stratum spinosum (prickle cell layer)?
Keratin accumulates around spot desosomes and Langerhan’s cells are found among keratinocytes. The permeability barrier forms.
What are the 3 types of fibrous joint and where are they found?
Suture (e.g. skull bones)
Sydesmoses (interosseous, e.g. fibula to tibula)
Gomphoses (e.g. tooth to jaw)
What is an advantage of x-ray?
High spatial resolution
What is average mean blood pressure of systemic circulation?
92 mmHg
What are the 3 kinds of joint in the body and how are they different?
Fibrous- united by collagen
Cartilaginous- united by cartilage
Synovial- fluid filled