The structure on labelled “A” on the image below is called what?

Which of the following secretes hormones?

Identify the bone labelled “E” in the image below:

In this image, the pointer points to:

The filtering structure of the excretory system is called what?

What is the organ labelled “C” on the image below?

Identify the bone labelled “A” on the image below.

What is the anatomical directional term for “B” on the image below?

What is the anatomical directional term for “A” on the image below?

Blood circulation that supplies the tissues of the heart is called: