102 circulatory

Question 1

dorsal, thin-walled triangular chamber
- base attached to the transverse septum
- collects venous blood
- all veins lead to this chamber

Answer 1

Sinus vinosus

Question 2

• single-chambered, thin-walled sac
• anterior to the sinus venosus and dorsal
  to the ventricle
• largest part of the dorsal pericardial cavity

Answer 2

Atrium

Question 3

• thick-walled, muscular, posterior chamber
• inverted pyramid in shape, with broad base caudad
• main pumping area- paired coronary arteries on ventral surface

Answer 3

Ventricle

Question 4

thick-walled, muscular, anterior-most part
- cone-shaped
- composed of valves to prevent backflow of the blood

Answer 4

Bulbus arteriosus

Question 5

where blood enters
- base attached to transverse septum
- thin-walled triangular sac

Answer 5

Sinus venosus

Question 6

Thin-walled
-single chambered
- pumps blood to ventricle

Answer 6

Atrium

Question 7

thick muscular walled cavity
- apex: near sinus venosus
base: broad anterior end
- pumps blood through conus
arteriosus to gills and body
- coronary artery on ventral

Answer 7

Ventricle

Question 8

• muscular portion
• extends anteriorly from base of ventricle
• contains a series of semilunar valves that
  direct the blood flow

Answer 8

Bulbus arteriousus

Question 9

• carry blood from the heart towards the tissues
• thick walls containing elastic and collagen fibers

Answer 9

Arteries

Question 10

• with smooth muscles
• less than 1/3 mm in diameter
• gives rise to smaller arteries
• with well developed smooth wall muscles

Answer 10

Arterioles

Question 11

• minute tube (5-20 m internal diameter)
• can dilate and constrict

Answer 11

Capillary

Question 12

• small veins that collect blood from capillaries
• receives blood from arteriole and gives up to a
  small vein
• differ from capillaries by having more connective

Answer 12

Venules

Question 13

carry blood from capillaries/venules to the heart
* with smooth lining of flat cells and muscular and
fibrous tissues outside

Answer 13

Veins

Question 14

For inflammation, and its nucleus is lobulated and the rare for teleost

Answer 14

Basophils

Question 15

Elongated, nucleus is off center, for defense from parasites

Answer 15

Eosinophils

Question 16

Varied shape, first defense of infection

Answer 16

Neutrophils

Question 17

Large round kidney shaped nucleus, Phagocytosis

Answer 17

Monocytes

Question 18

Oval to round, large round nucleus

Answer 18

Lymphocytes

Question 19

spindle or teardroop shaped, For blood clotting, equivalent to pplatelets

Answer 19

Thrombocytes