1.In which of the following organisms does the centralized nervous system first appear?
2.Which organism features a deeper nerve plexus located within its parenchyma, along with a superficial neuronal network?
3.Which part of the pituitary gland is commonly known as the "master gland"?
4.Which organism possesses a diffuse nervous system?
5.Which of the following organisms has a nervous system made up of a network of neurons located between the ectoderm and endoderm layers?
6.Which region of the Hydra’s body is most sensitive and responds immediately to external stimuli?
7.Where are the hormones synthesized by the hypothalamus stored?
8.Which ovoid organ, approximately 0.5 mm in size in adults, is linked to the brain by a short stalk?
9.Which region of the forebrain functions as an endocrine gland and is thought to secrete oxytocin and antidiuretic hormone (ADH)?
10.Which hormone among the following is classified as an amino acid or a derivative of an amino acid?
11.Which of the following hormones is classified chemically as a polypeptide?
12.Insulin and glucagon belong to which category of hormones?
13.Which of the following is classified as a steroid hormone?
14.Which of the following chemical types can hormones belong to?
15.Which organic substances, ranging in structural complexity, are released directly into the bloodstream and carried to their specific target tissues?
16.Which term describes a distinct cluster of cells responsible for producing particular chemical substances?
17.How do hormones influence their target cells?
18.What is true about the function of each sensory receptor organ?
19.Which receptors are present in the skin?
20.Which of the following is classified as an electromagnetic receptor?