When a baby suckles, more milk is produced to continue feeding.

• Positive Feedback

• Negative Feedback

Goblet Cells

• Gastric Juices

• Saliva

• Succus Entericus

• Bile

Which happens first?

• The right atrium contracts, pushing the blood through the tricuspid valve into the right ventricle.

• The right ventricle contracts, sending blood through the pulmonary valve and into the pulmonary arteries, which transport the blood to the lungs for oxygenation.

• Oxygenated blood flows back to the heart through the pulmonary veins and enters the left atrium.

• Blood low in oxygen and rich in carbon dioxide enters the right atrium from the body via the superior vena cava (from the upper body) and the inferior vena cava (from the lower body).

Odd One Out. Respiratory System.

• Alveoli

• Esophagus

• Trachea

• Bronchi

Odd one out. Respiratory System Function

• Oxygen transport

• Carbon dioxide removal

• Blood filtration

• Gas exchange

Scapula

• Pectoral Girdle

• Skull

• Pelvic Girdle

• Upper & Lower Extremities

Temporal

• Pectoral Girdle

• Skull

• Pelvic Girdle

• Upper & Lower Extremities

Humerus

• Upper Extremity

• Pelvic Girdle

• Pectoral Girdle

• Skull

Frontal

• Pectoral Girdle

• Skull

• Pelvic Girdle

• Upper & Lower Extremities

Which occurs last?

• Blood low in oxygen enters the right atrium from the body.

• Oxygenated blood flows from the lungs through the pulmonary veins into the left atrium.

• The left atrium contracts, pushing blood through the mitral valve into the left ventricle.

• The left ventricle contracts, sending oxygenated blood through the aortic valve into the aorta.