BIO 290 9/4 and 9/5

True or False: The external intercostal muscles have an attachment that is ventral to the transverse processes.

• True

• False

What is the action of the external intercostal muscles?

• elevate the ribs during expiration

• elevate the ribs during expiration

• depress the ribs during inspiration

• elevate the ribs during inspiration

The internal intercostal muscle

• depresses the ribs during inspiration

• depresses the ribs during expiration

• elevates the ribs during inspiration

• elevates the ribs during expiration

Arteries move blood ____ from the heart and veins move blood _____ the heart

• away; to
• toward; away

Pectinate muscles are located in the ____

• ventricles of the heart
• aorta
• atria of the heart
• pulmonary arteries

Which parietal layer directly attaches to your heart?

• Visceral pericardium

• Fibrous pericardium
• Parietal pericardium

True or False: The floating ribs are attached to costal cartilage

• True
• False

What structures empty into your right atrium?

• Coronary Sinus

• Superior Vena Cava

• Inferior Vena Cava

• Pulmonary veins

Blood leaving the pulmonary semilunar valve is ________ blood

• deoxygenated
• oxygenated

The pulmonary veins carry _________ blood

• Oxygenated

• Deoxygenated