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Body logistics > Bone Marrow And Blood Vessels > Flashcards

Bone Marrow And Blood Vessels Flashcards

1
Q

Where is red bone marrow found in the bone

A

At cancellous bone in the epiphysis

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2
Q

What are the 2 types of bone marrow

A

Red and Yellow

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3
Q

What is the function of the red marrow

A

Haemapoiesis

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4
Q

What is the function of yellow bone marrow

A
  • Shock absorber

- Energy Source

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5
Q

What is the role of yellow bone marrow in times of haemorrhage

A

Can be converted to red marrow and aid haemapoiesis

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6
Q

How do maturing cells leave the bone marrow

A

Through a central marrow vein

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7
Q

How is the release of platelets different to other cells

A

Megakaryocytes are released directly into the blood

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8
Q

How long does its take for RBC to mature in the circulation

A

2 days

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9
Q

Where do T-cells mature

A

The thymus

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10
Q

How is blood flow in the capillaries controlled

A

Pre-capillary sphincters

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11
Q

What are the 3 layers (tunicas) of a vein

A

Tunica intima
Tunica media
Tunica externa

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12
Q

What venous structure assists people with unidirectional flow

AND what are they made of

A

Fibroelastic cartilaginous valves

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13
Q

What does the cardiovascular circulation rely on for venous return

A

Muscular contraction

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14
Q

What is found in the tunica media

A

Elastic fibres and smooth muscle

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15
Q

What are 4 major types of veins

A
  • Pulmonary
  • Systemic
  • Superficial
  • Deep
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16
Q

What are the largest veins

A

Superior and Inferior Vena Cava

17
Q

How many elastic membranes do arteries have

A

2 (Internal and External)

18
Q

Describe the function of collateral blood vessels

A

Provides alternative pathway for ARTERIAL blood

19
Q

What are the 2 processes that result in the formation of new blood vessels

A

1 - Vasculogenesis

2 - Angiogenesis

20
Q

Describe the 2 types of vasculogenesis

A

Angiogenesis

Intussusception

21
Q

Describe angiogenesis

A
  • Formation of blood vessels from pre existing blood vessels

- Percicytes convert into smooth muscle and surround new blood vessel

22
Q

Describe Intussception

A
  • Primary vessel splits into 2 new vessels

- Explains why arteries and veins are close together

23
Q

What is found in the tunica media

A

Smooth muscle and Elastic fibres

24
Q

What is found in the tunica externa

AND how is this tunica different between arteries and veins

A

Elastic fibres

Arteries have collagen

Body logistics (5 decks)

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