This week in 206 I Physiology of the

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This week in 206 I. Physiology of the Crayfish II. Human cardiovascular physiology III.

This week in 206 I. Physiology of the Crayfish II. Human cardiovascular physiology III. Circulation in the gold fish

Animal respiration and circulation. What is respiration?

Animal respiration and circulation. What is respiration?

Animal respiration and circulation. What is respiration? Glucose + O 2 Breathing. CO 2

Animal respiration and circulation. What is respiration? Glucose + O 2 Breathing. CO 2 + H 2 O + E

Gills or lungs Circulatory system O 2 Outside Air or water O 2 CO

Gills or lungs Circulatory system O 2 Outside Air or water O 2 CO 2 + Glucose O 2 CO 2 Membrane(s) O 2 21% CO 2 <1% Tissues Organs CO 2 + H 2 O + E Membrane(s)

Circulatory systems Open Arthropods/crustacea Crayfish Blood pumped out to tissues, dumped in sinuses Tissues

Circulatory systems Open Arthropods/crustacea Crayfish Blood pumped out to tissues, dumped in sinuses Tissues ~bathed Comes back to heart Through sinuses and Reenters through ostia Low pressure-low resistance High volume vs. Closed Vertebrates human Blood pumped in pipes and Never touches tissues-arteries/veins Trend is to separate oxygenated From non-oxygenated blood High pressure-high resistance Low volume

Respiratory systems

Respiratory systems

Open circulatory system Arteries Ostia Ophthalmic- eyes Antennal- antennae, antennules, green glands Hepatic- digestive

Open circulatory system Arteries Ostia Ophthalmic- eyes Antennal- antennae, antennules, green glands Hepatic- digestive gland Heart Sinuses arteries Heart ostia

Closed Vertebrate circulatory systems

Closed Vertebrate circulatory systems

Human heart 2 systems- pulmonary and systemic.

Human heart 2 systems- pulmonary and systemic.

Structure of blood vessels

Structure of blood vessels

Human respiratory system

Human respiratory system

Angioplasty

Angioplasty

Coronary bypass

Coronary bypass

Measuring Blood Pressure Sphygmomanometer Stethoscope High pressure = systolic, blood flow stopped above this

Measuring Blood Pressure Sphygmomanometer Stethoscope High pressure = systolic, blood flow stopped above this Low pressure = diastolic, flow unrestricted below this 120 mm Hg 80 mm Hg

Crayfish respiration

Crayfish respiration

Dr. James L. Larimer UT-Austin professor 1959 - 2005 Zoology / Neurobiology

Dr. James L. Larimer UT-Austin professor 1959 - 2005 Zoology / Neurobiology

Set O 2 level and monitor Measure ventilation rate Bubble O 2 or N

Set O 2 level and monitor Measure ventilation rate Bubble O 2 or N 2