Answer:
A barometer
Explanation:
It is commonly used to measure atmospheric pressure
Since the other answer got deleted, i'll just answer it for you.
a sinoatrial node is the main pacemaker that begins each heartbeat located in the junctions of superior vena cava and the right atrium. It signals from the node that spread through the atria and determines the heart rates.
Sensory nerve endings in the fingers include Meisnner's corpuscles, Pacinian corpuscles, free nerve endings, Merkel discs, and Ruffini endings.
Pituitary gland: Responsible for growth and reproduction, it secretes and stores hormones and influences how other glands act.
Adrenal gland: It’s responsible for producing certain steroid hormones, including aldosterone and cortisol.
It's a vague description of the two.
Although they are radically symmetrical,echinoderms are more closely related to human than to a jellyfish because they are biltarian.