Capillaries are made up of very thin and flat tissues that are spread across the body. Substances are able to diffuse through the capillaries because of the presence of blood. Particularly, the red blood cells that make-up blood within the body. These cells have the ability to carry oxygen, carbon dioxide, glucose, and water to pass through the capillaries.
Phenotype <span>refers to physical characteristics that are studied in genetics.</span>
The answer relates to the medium in which the sensed molecules travel. On land, animals detect a scent through organic molecules transported in the air. Land animals will experience a taste sensation by grasping an object using their mouth. Here, the organic molecules providing the sensation are transported by saliva or organic fluids of the object. So on land, there is a clear distinction between molecules transported in the wind and those that can be tasted. Water is a much more dense medium than air, and can carry small and large organic molecules, unlike air. Therefore, aquatic animals have little need for olfactory organs as all molecules can be 'tasted' from the water.
Answer:
They produce the:
• Tropic hormones (Thyroid stimulating hormone, Adrenocorticotropic hormone ACTH, Luteinizing hormone LH and Follicle-stimulating hormone FSH).
• The growth hormone and
• Prolactin.
Explanation:
The pituitary gland, found just below the hypothalamus consists of an anterior and posterior part, which release hormones which are either proteins or polypeptides
The secretion of these hormones are stimulated by chemicals produced by the hypothalamus and transported to the pituitary in the bloodstream.
The anterior pituitary glands hormones consists of several tropic hormones that regulates the activities of the other endocrine glands(through homeostatic mechanisms); also the growth hormone and prolactin.
