Cvs 3 - Part 3 Flashcards
Brain naturietic peptide function
counter the effects of Aldosterone and ADH
Brain Natriuretic Peptide is produced where
Ventricles
• Small cell carcinoma – what is it?
most dangerous cancer of the lungs;
• What is a very common condition associated with ADH, present in anyone who is taking antidepressants or antipsychotic medications or heavy smokers?
Syndrome of inappropriate antidiuretic hormone hypersecretion, SIADH
• A sizeable number of tumors can produce hormones.
K
What is a condition in which ADH is low?
Diabetes insipidus
3 structural types of capillaries:
Continuous
Fenestrated
Sinusoids
Continuous capillaries function
And location
– very selective, only allows very few things to pass through. Found in the Barriers of the Human body (blood brain Barrier)
Fenestrated capillaries function
allow things to pass through, but their openings are not as large as the sinusoids
Sinusoids capillaries function
And location
found in the bone marrow, liver; cells can pass through these as well.
• The capillary bed has a bypass channel in the center of the capillary bed that is only activated in the body in a state of emergency. On the arterial end it is called the __________. On the Venous end it is called the ________ _________. Both of these combined make up a shunt/bypass channel that is only used when blood is emergently required in another part of the body.
Meta arteriole
Thoroughfare channel
• What is the smallest artery in the human body that feeds the capillary bed
Terminal arteriole
• What is the smallest vein in the human body?
Postcapillary venule
• Smaller venous channels that come together to create veins are called
Tributaries
• 65% of the human blood is located in the veins; this is why veins are called
Capacitance vessels
Sinus
NORMAL ballooning of an ARTERY;
Sinus function
; behaves like a baroreceptor and, via nerves, send the signal to the brain
Aneurysm
– ABNORMAL ballooning of an ARTERY;
Bulb
NORMAL ballooning of a VEIN
• Varicosity (Varicose Vein)
ABNORMAL ballooning of a VEIN
• Stripping of a varicose vein –
surgical procedure where the varicose vein is pulled out
• Mean Arterial Pressure (MAP) =
Diastolic Pressure + 1/3 Pulse Pressure (healthy range is between 70-110)
• Pulse Pressure =
Systolic blood pressure– Diastolic blood pressure
• Glossopharyngeal Nerve (Cranial Nerve 9) takes signals from the
Carotid Sinus to the brain
Carotid body
Most vascular tissue in the human body
What does carotid body sense
It is a cluster of chemoreceptors that senses the levels of oxygen, carbon dioxide, pH and temperature. It sends signals to the brain via the glossopharyngeal nerve
The cardiogenic and Vasomotor centers are located in the
Brain stem
Why is there excessive urination associated with drinking alcohol?
Because Alchohol inhibits ADH, causing dieresis
Most common cause of heart enlargement
Hypertension
When blood pressure and volume increases, the heart produces hormones called
Atrial Natriuretic Peptide
Brain Natriuretic Peptide
What are the effects of small cell carcinoma
produces large amounts of ADH, which may present as SIADH
