Bio 201 Exam 3

T/F: Each of the 32 pairs of mixed spinal nerves connects to the spinal cord by a ventral root containing motor fibers, and a dorsal root containing sensory fibers.

False

The release of cortisol is an example of:

hormonal stimuli

A fibers:

carry sharp pain

In 80% of the population, the posterior interventricular artery is a branch off of the

right coronary artery

Most post-ganglionic cell bodies of the sympathetic nervous system lie:

in the sympathetic chain ganglia

The layer of the heart wall composed of cardiac muscle tissue is the

myocardium

Which sequence is correct?

left ventricle > aorta > coronary artery

The pericardial cavity lies between

the parietal pericardium and the visceral pericardium

Cell fragments, also called thrombocytes, involved in clotting are also called ____.

platelets

Which white blood cells contain granules of histamine?

basophils

The hematocrit is:

the amount of erythrocytes in blood

Albumin is an important component of blood because:

it maintains blood osmolarity

A person with type A blood will have:

type A antigens and type B antibodies

The tunica intima is composed of:

endothelium

Lymph is a liquid connective tissue that is formed from:

interstitial fluid

Blood will flow from the renal artery into:

kidney

T/F: Posterior cerebral arteries help form the circle of Willis at the base of the brain.

True

The common iliac vein dumps blood into the:

inferior vena cava

The hormone secreted by the zone fasciculata is

cortisol

Which is the only cranial nerve that innervates visceral organs in the thoracic and abdominopelvic cavities?

X (vagus)

The anterior pituitary gland is attached to the hypothalamus by the _____.

infundibulum

The ______ nerve innervates the brachialis and skin of forearms

musculocutaneous

Which of the following are associated with the peripheral nervous system?

nuclei

efferent nerve endings

ganglia

sensory receptors

nerves

efferent nerve endings, ganglia, sensory receptors, and nerves

Endocrine glands:

release hormones into the bloodstream that bind to and affect specific target cell receptors

“Rest and digest” is to _____ as “fight or flight” is to ______

parasympathetic; sympathetic

Over secretion of growth hormone in an adult results in:

acromegaly

In type 2 diabetes mellitus:

target cells develop insulin resistance

The communicating rami of spinal nerves:

connect with the sympathetic chain ganglia

A 27-year-old male is seen in the emergency department following a motor vehicle accident. He complains of not being able to move his left leg. The most likely location of spinal nerve damage is:

the ventral root

Which of these is the most correct sequence of signals?

SA node > AV node > AV bundle > Purkinje fibers > walls of the ventricle

Gas, nutrient, and waste exchange occur between the ______ and the tissues of the body.

capillaries