Unit 2 Topic 1

Question 1

What layer of the heart contains adipose tissue?

Answer 1

epicardium

Question 2

What layer of the heart is thickest?

Answer 2

myocardium

Question 3

What layer of the heart has fibers and simple squamous epithelium?

Answer 3

endocardium

Question 4

What are purkinje fibers specialized for?

Answer 4

rapid conduction of action potentials for coordinated ventricular contraction

Question 5

What are the collection of cardiac myocytes that are found in the subendocardial layer of the heart?

Answer 5

purkinje fibers

Question 6

What component of the intercalated disk is perpendicular to the myofibrils and provide structural attachment?

Answer 6

Transverse component

Question 7

Where are fascia adherens found?

Answer 7

boundaries of cells

Question 8

What is the function of maculae adherens?

Answer 8

bind cells together and reinforce fascia adherens

Question 9

What component of the intercalated disk are parallel to myofibrils and provide functional attatchment?

Answer 9

lateral component

Question 10

What component of the intercalated disk includes gap junctions that provide ionic continuity to create a synctium and allow coordniated depolarization?

Answer 10

Lateral

Question 11

What takes blood away from the heart?

Answer 11

arteries

Question 12

What type of artery is resistant to large pressure changes and allow stretch and recoil?

Answer 12

elastic

Question 13

What type of artery dampens oscillations in blood pressures and are the majority of arteries?

Answer 13

muscular

Question 14

What regulates blood pressure and are highly active in vasoconstriction and vasodilation?

Answer 14

arterioles

Question 15

What takes blood to the heart?

Answer 15

veins

Question 16

What operates at a lower pressure: veins or arteries?

Answer 16

veins

Question 17

What has large, irregular shaped lumen: arteries or veins?

Answer 17

veins

Question 18

What has no internal elastic lamina in the tunica intima, but a small amount of connective tissue?

Answer 18

veins

Question 19

Do arteries or veins contain valves?

Answer 19

veins if they are below the heart

Question 20

What has the smallest diameter: arteries, veins, or capillaries?

Answer 20

capillaries

Question 21

What is composed of simple squamous epithelium with an underlying basement membrane and is the site of gas/nutrient/waste exchange?

Answer 21

capillaries

Question 22

What type of capillaries are sealed with zona occuldens at the edges are are found in the CNS, lung, CT, and muscle?

Answer 22

continuous

Question 23

What is limited in the continuous capillaries?

Answer 23

transport is limited to transcytosis and diffusion

Question 24

What capillaries are transcellular openings or windows in endothelium?

Answer 24

fenestrated

Question 25

Where are fenestrated capillaries found?

Answer 25

kindney, endocrine, and intestines

Question 26

What capillary has large gaps between cells?

Answer 26

sinusoids

Question 27

What capillary has large gaps for movement of fluid, proteins, or cells to pass easily?

Answer 27

sinusoids