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BIO > Circulatory System > Flashcards

Circulatory System Flashcards

1
Q

What type of heart has pacemakers?

A

myogenic/autogenic

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2
Q

What is the thickest layer of the heart wall?

A

myocardium

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3
Q

What heart layer is the trabeculae carneae found?

A

endocardium

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4
Q

In agnathans, where must the blood go through before entering the atrium?

A

sinus venosus

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5
Q

In teleost, what serves as the pacemaker of the heart?

A

sinus venosus

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6
Q

What kind of arteriole does a teleost have?

A

bulbus arteriole

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7
Q

Describe the chambers of a frog’s heart.

A

2 atria + 1 ventricle

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8
Q

What kind of circuit does an amphibian have?

A

dual systemic circuit

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9
Q

In a reptilian heart, the interventricular septum is incomplete, what is the implication?

A

blood can mix

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10
Q

Oxygenated blood is contained in which area of a reptilian heart?

A

left systemic aorta

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11
Q

In a crocodile, the interventricular septum is complete but the mixing of blood still happens. Why?

A

because of the foramen of panizza

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12
Q

What connects the right and left atria?

A

foramen ovale

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13
Q

What connects the aorta and pulmonary artery?

A

ductus arteriosus

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14
Q

When someone says “may butas sa puso”, what structure are they referring to?

A

foramen ovale. it didn’t fully close at birth

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15
Q

Umbilical vein becomes what after birth?

A

ligamentum teres

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16
Q

What is the function of the sinoatrial node of the heart?

A

pacemaker; mass of excitable tissue

17
Q

Where is the sinoatrial node located?

A

apex of the heart

18
Q

A shark has how many aortic arches?

A

6

19
Q

What is the 3rd aortic arch?

A

carotid arch

20
Q

What is the 4th carotid arch?

A

systemic arch

21
Q

What is the 6th aortic arch?

A

pulmonary arch

22
Q

The cardinal stream drains what?

A

head, dorsa body wall, kidney

23
Q

The abdominal stream drains what?

A

ventral body wall + paired appendages

24
Q

What stream brings blood to the liver?

A

hepatic portal stream

25
Q

What stream brings blood to the kidney?

A

renal portal stream

26
Q

Where does lymph eventually drain into?

A

venous system

27
Q

What is the function of the primary lymphoid organ?

A

production of lymphocyte

28
Q

What is the function of the secondary lymphoid organ?

A

site of differentiation, maturation, and activation of lymphocyte

29
Q

small masses of lymphatic tissue located in the lining of the small intestine, primarily in the ileum

A

Peyer’s patches

30
Q
A

BIO (10 decks)

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