Shared Flashcard Set

Details

Histology Ch. 5-10 Test
Cartilage, Connective, Bone, Nervous, Adipose, Muscle
56
Biology
Undergraduate 3
10/28/2015

Additional Biology Flashcards

 


 

Cards

Term
Mesenchymal cells DO NOT differentiate into
Definition
Type A Synovial Cell
Term
Where are Macrophage-like type A Synovial cells derived from
Definition
blood monocytes
Term
What is Synovial fluid
Definition
clear, viscous liquid derived from blood plasma with high concentration of hyaluronan.  Lubricant for joints.
Term
What do type A synovial cells do?
Definition
remove wear-and-tear debris from the synovial fluid and regulate inflammatory events
Term
What do type B (fibroblastic) synovial cells do?
Definition
Produce hyaluronan
Term
What is involved in degradation of collagen?
Definition
Matrix metalloproteinases
Term
What are the three forms of cartilage?
Definition
Hyaline, Elastic, and Fibrocartilage
Term
What are the cells of cartilage?
Definition
chondrocytes
Term
What is the most common type of cartilage in the body?
Definition
Hyaline Cartilage (with type II collagen)
Term
Which ECM fiber has the defining structure of a triple helix?
Definition
Collagen
Term
What are the three types of collagens?
Definition
Fibrillar, Sheet-forming, and Linking/anchoring
Term
What type of collagen is the sheet forming collagen?
Definition
type IV
Term
What type of collagen is fibrillar collagen?
Definition
I, II, and III (with type I being the most abundant)
Term
What gives the white adipose its natural color when freshly removed?
Definition
Carotenoids
Term
What gives brown adipose its natural color?
Definition
Cytochrome C and a large number of capillaries
Term
Norepinephrine released from nerve endings activates what hormone to break down what in adipocyte stimulation?
Definition
Hormone-sensitive lipase; breaks down triglycerides (converts to glycerol and fatty acids)  Glycerol enters blood and is taken up by liver.  Fatty acids bind to albumin to be transported throughout body.
Term
What is the most common type of cartilage in the body?
Definition
Hyaline cartilage
Term
What is most abundant proteoglycan in the ECM?
Definition
Aggrecan
Term
What mediates adherence of chondrocytes to the ECM?
Definition
Condronectin
Term
What is the primary type of collagen found in hyaline cartilage?
Definition
Type II
Term
What is primary collagen found in fibrocartilage?
Definition
Type I
Term
What distinguishes fibrocartilage from Elastic and Hyaline cartilage?
Definition
No distinct perichondrium
Term
Which compound is secreted by osteoblasts?
Definition
Osteocalcin
Term
Osteocalcin is involved in what?
Definition
calcification of the matrix
Term
List and describe steps of endochondral ossification?
Definition
Cartilage forms a model of bone to be made, bone collar forms, degeneration of cartilage in bone collar, capillaries invade to provide osteoprogenitor cells, and osteoid is deposited by osteoblasts and is calcified
Term
Which type of bone is produced first?
Definition
woven bone
Term
What is the primary type of bone (which replaces woven bone)?
Definition
lamellar bone
Term
What inhibits resorption of calcium?
Definition
Calcitonin
Term
What stimulates resorption and calcium release in bone tissue?
Definition
The Parathyroid gland hormone (PTH)
Term
What percent of the calcium reservoir is found in the skeleton?
Definition
99%
Term
Which of the support cells of the nervous system is involved in moving CSF?
Definition
Ependymal cells
Term
Which nervous system support cells produce myelin sheaths around axons to provide electircal insulation?
Definition
oligodendrocytes
Term
Which nervous system support cells are the most numerous glial cells in CNS and function as regulators?
Definition
Astrocytes
Term
Retrograde transport refers to the transport of materials where?
Definition
From axon TO THE CELL BODY
Term
Anterograde transport refers to transport from where?
Definition
FROM THE CELL BODY through the axon
Term
Nervous components such as sensory neurons that recieve stimuli are.....?
Definition
Afferent
Term
Nervous components such as motor neurons which send impulses are....?
Definition
Efferent
Term
Which layer of meninges acts as a cushion?
Definition
Arachnoid
Term
What three connevtive tissue layers covering the CNS make up the meninges?
Definition
Dura Mater, Arachnoid, and Pia Mater
Term
What functions to remove water from blood and release it as CSF?
Definition
CHOROID PLEXUS
Term
What are the three main components of the peripheral nervous system?
Definition
nerves, ganglia, and nerve endings
Term
What are the major regions of the Central Nervous System?
Definition
Cerebrum, Cerebellum, and Spinal Cord
Term
A sarcomere is a subunit of muscle measuring from what?
Definition
Z disc to the next Z disc
Term
What are the three types of muscle tissue?
Definition
Skeletal, Cardiac, Smooth
Term
Skeletal muscles exhibits light and dark bands called...
Definition
A bands, I bands, and Z disc
Term
What is folded into the T tubules of muscle cells?
Definition
Sarcolemma
Term
What enzyme supplies ATP to muscle?
Definition
Creatine kinase
Term
The role of myoglobin in muscle is to provide...
Definition
oxygen
Term
Why does cartilage exhibit slow repair?
Definition
Because it is avascular, containing no blood vessels.
Term
What are the steps of muscle contraction?
Definition

1.Aceytlcholine is released from neuron to cause calcium release in muscle.

2. Calcium binds troponin to cause tropomyosin to move actin revealing action sites.  

3. Mysosin binds to actin and changes shape to pull actin (requires ATP).

4. Calcium is reabsorbed to end contraction by tropomyosin covering actin.

Term
What is the largest protein in the body?
Definition
Titin
Term
Draw an action potential chart.
Definition
[image]
Term
List one stimulatory and inhibitory neurotransmitter
Definition

Adenosine, GABA- inhibitory

Norepinephrine, Acetylcholine- stimulatory

Term
What is a neurotransmitter which can be both inhibitory and stimulatory?
Definition
Dopamine
Term
What is a neurotransmitter which can be both inhibitory and stimulatory?
Definition
Dopamine
Term
What does GABA do?
Definition
Influences muscle tone and opens and closes various ion channels
Supporting users have an ad free experience!