BISC 1404 Study Guide - Midterm Guide: Skeleton, Behavioral Ecology, Ependyma

• School: Fordham University
• Department: Biological Sciences
• Course: BISC 1404
• Professor: Bricklin

Document Summary

Endocrine-release hormones, for long distances: paracrine- secreting hormones for nearby signalling, short distances, autocrine- hormones that stimulate the same cell that secretes it, neuroendocrine- neurosecretory cell with synapse at blood vessel. Short term response: epinephrine and norepinephrine triggers increased blood glucose, blood pressure, breathing rate, metabolic rate, and blood flow patterns. Sexual reproduction: what is the difference between asexual and sexual reproduction, asexual- generation of offspring from 1 parent, no fusion of gametes, genetically identical. # of surviving offspring are affected by the number of gametes produced, protection of the embryos, and parental care. Spermatogenesis- primordial germ cells undergo mitosis to become primary spermatocytes which undergo meiosis into early spermatid. These differentiate into mature sperm cells (1 cell = 4 sperm: oogenesis- primordial germ cells undergo mitosis into oogonium and then again into primordial oocyte (present at birth). Starting at puberty, meiosis occurs and at secondary oocyte it stops at metaphase ii unter sperm enters.