Question

blood passing through the tricuspid valve has just left which heart chamber?○ left atrium○ left ventricle○ right atrium○ right ventriclewhich of the following is not true of the pituitary gland? ○ it is composed of two endocrine glands.○ its posterior portion is called the adenohypophysis○ it is located in the sella turcica of the sphenoid bone.○ all of these are true of the pituitary glandwhich of the following is not true of the pineal gland? ○ it is located in the brain○ it produces melatonin○ it helps regulate the bodys \biological clock.\○ all of these are true of the pineal gland

Explanation:

1. For the heart chamber question: Blood flows from the right atrium through the tricuspid valve into the right ventricle, so blood passing through the valve has just left the right atrium.
2. For the pituitary gland question: The posterior pituitary is called the neurohypophysis; the adenohypophysis is the anterior portion, making this statement false.
3. For the pineal gland question: The pineal gland is brain-located, produces melatonin, and regulates the biological clock, so all statements are true.

Answer:

1. right atrium
2. Its posterior portion is called the adenohypophysis
3. All of these are true of the pineal gland