BIOLOGY 306 COMPARATIVE VERTEBRATE ANATOMY

LAB # 3

Anatomy of the Dogfish Shark:

Circulatory System, Sense Organs, Nervous System

Quiz: Figs. 5-3 (p. 57); 5-4 (p. 59); 7-2 (p. 71)

A. CIRCULATORY SYSTEM, Exercise 5. p. 55-63

For this exercise find the following structures:

Heart: atrium, ventricle, conus arteriousus, sinus venosus, coronary artery

Floor of mouth: ventral aorta, afferent branchial artery, hypobranchial artery, pericardial artery.

Roof of mouth: efferent branchial artery, dorsal aorta, radix aorta, hyoidean epibranchial artery, internal carotid artery, stapedial artery, esophageal artery, subclavian artery, anterior epigastric artery.

Abdominal cavity: dorsal aorta, celiac artery, hepatic artery, gastric artery, pancreaticomesenteric artery, anterior intestinal artery, annular artery, posterior intestinal artery, gastrosplenic artery, posterior mesenteric artery, posterior epigastric artery.

Hepatic portal vein, pancreaticomesenteric vein, gastric vein, lienomesenteric vein, anterior intestinal vein, annular vein, posterior splenic vein, posterior intestinal vein, anterior splenic vein.

Renal portal vein, lateral abdominal vein, Posterior cardinal vein.

B. SENSORY SYSTEM, Exercise 7. p. 69-74

Accomplish this exercise with the following OMISSIONS:

Exercise Lateral Line System – Omit Entire Section

Exercise Orbital Structures (p. 70, fig. 7-2) – omit:

Abducens Nerve (p. 70)

Oculomotor Nerve (p. 70)

Exercise Eyeball – Omit Entire Section

Exercise Ear - Omit Entire Section

C. NERVOUS SYSTEM, Exercise 8. p. 75-80

For this exercise, find the following structures

Brain structures: olfactory bulb, olfactory tract, olfactory lobe, cerebral hemisphere, tela choroidea, optic lobe, cerebellum, auricle, medulla oblongata

Cranial Nerves: (I) olfactory nerve

(II) optic nerve

(III) occulomotor nerve

(IV) trochlear nerve

(V) trigeminal nerve

(X) vagus nerve

LAB 4

LAB PRACTICAL - test is Tuesday (Feb. 22nd).

The lab will be open Monday night.

Below is the approximate distribution of questions from each lab and the topic covered.

Lab #1 Lab #2 Lab #3

Diversity – 11 Ext. Morphology - 3 Circulatory – 8

Lamprey – 4 Musculature - 6 Eye Socket – 4

Amphioxus – 2 Internal Organs – 5 Nervous – 4

Urogenital - 2