27 october 2008
DESCRIPTION
27 October 2008. Lab This Week: Frog Muscle II: Testing a Hypothesis based on Isometric twitch contractions Reminder: Bring textbook to lab Run t-test in SPSS Ready to write Abstract (see assignment) Finish Ch 10 Control of Body Movement Begin Ch12 Cardiovascular Physiology. Fig. 10.07. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/1.jpg)
27 October 2008Lab This Week: Frog Muscle II: Testing a Hypothesis based on Isometric twitch contractions
Reminder: Bring textbook to labRun t-test in SPSSReady to write Abstract (see assignment)
Finish Ch 10 Control of Body MovementBegin Ch12 Cardiovascular Physiology
![Page 2: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/2.jpg)
Fig. 10.07Senses (transduces) muscle tension
![Page 3: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/3.jpg)
Golgi tendon organs oppose excessive muscle tension.
Not monosynaptic!
![Page 4: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/4.jpg)
Fig. 10.01Initiates motor command
![Page 5: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/5.jpg)
Fig. 10.02
![Page 6: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/6.jpg)
Fig. 10.10a
![Page 7: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/7.jpg)
Fig. 10.11
Somatotopy
![Page 8: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/8.jpg)
Fig. 10.12Pyramidal tract
Extra-Pyramidal tracts
Not monosynaptic!
Rubrospinal,Reticulospinal,Vestibulospinal tracts
Corticospinal tractCorticobulbar tract
![Page 9: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/9.jpg)
Movement Disorders
Huntington’s chorea
Parkinsonism
Ballism and hemiballism Cerebellar disorder
![Page 10: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/10.jpg)
Ch 12 Cardiovascular Physiology
6 sections p. 359-4392 CV labs:
1 Frog heart, 1 Human EKG and Blood Pressure
![Page 11: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/11.jpg)
![Page 12: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/12.jpg)
Circulatory System Circulates• Nutrients: glucose, amino acids, fatty acids, ketones, etc• Wastes:• Hormones: bound & free• Gases: CO2 and O2
• Formed Elements: Cells and Cell Fragments– Erythrocytes, Leukocytes, Thrombocytes = Platelets
Other roles of the Cardiovascular System
Thermoregulation
Blood Clotting
Reproduction (ex: penile erection)
![Page 13: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/13.jpg)
Figure 12.01Blood volume ~ 5 liters
Serum = plasma – clotting factors
Formed elements
Components……
Blood doping & erythropoietin (hormone that stimulates erythrocyte production in bone marrow) to increase hematocrit
Entering and Exiting the blood
Discontinuous capillaries in bone marrow, spleen, & liver permit erythrocytes to enter and exit blood.
Hct = percentage of blood volume occupied by RBCs
Anemia
The Scoop on Tissie
![Page 14: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/14.jpg)
Fig. 12.02Arteries..away from heart
Veins..return to heart
Regional blood flow determined by arteries and arterioles.
Resting Cardiac Output = 5L/min for each side!
When left heart can’t pump all the blood it receives from pulmonary circuit (due to high aortic pressure and/or damage to left ventricle) blood accumulates in pulmonary circuit. This is congestive heart failure. Symptom: shortness of breath.
![Page 15: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/15.jpg)
Figure 12.04
CO = 5L/minfor each circuit
Up to 35 L/min in strenuous exercise
![Page 16: 27 October 2008](https://reader035.vdocuments.net/reader035/viewer/2022062218/56816336550346895dd3c1fa/html5/thumbnails/16.jpg)
What’s missing?
Microcirculation
Pulmonary circuit
Systemic Circuit
5 liters/min5 liters/min
Exchange Vessels
Resistance Vessels
Capacitance vessels