Considering the left ventricle, why does isovolumetric ventricular contraction occur during ventricular systole?  

 Stem cells that will form B cells or NK cells are found only in the  

The ________ divides the aorta into the thoracic aorta and the abdominal aorta.  

T cells and B cells that destroy only one antigen without affecting other antigens or normal tissues, this is termed  

The brachial artery branches to form the radial and ________ arteries.  

The following are structural components of the conducting system of the heart. Purkinje fibers AV bundle AV node SA node bundle branches The sequence in which excitation would move through this system is:  

Lymphocytes  

Which of the following layers of a vessel contains collagen fibers with scattered bands of elastic fibers?  

Angiotensin II is a very important hormone that leads to helping us maintain our hydration and blood pressure. Its formation is caused by the [gland1] sensing low blood pressure. That organ/gland then releases [hormone1] which turns [protein1] into [protein2] which is then converted into Angiotensin II by an enzyme produced in the lungs called: [enzyme]. 

In regards to the integrated responses: When an increase in osmolarity of the extracellular fluid is sensed by the [cells] this causes an increased release of [hormone1] which leads to [moreless1] water reabsorption and a decreased release of [hormone2] which leads to [moreless2] sodium reabsorption. Overall in response to this increased osmolarity the body gets rid of [chemical1] and holds onto more [chemical2] resulting in a [updown] osmolarity of the extracellular space.