Cell and Embryology Developmental Biology History and Basic
... single cell, therefore, development must be epigenetic and not preformational since a single cell (the fertilized egg) results in many different types of cells. Only the germ cells (egg and sperm) pass characteristics on to the offspring. (First distinction between somatic and germ cells) Somatic ce ...
... single cell, therefore, development must be epigenetic and not preformational since a single cell (the fertilized egg) results in many different types of cells. Only the germ cells (egg and sperm) pass characteristics on to the offspring. (First distinction between somatic and germ cells) Somatic ce ...
Anatomy of the Earthworm
... The earthworm has a central nervous system made up of a brain and a pair of solid, ventral nerve cords. The. brain is actually a pair of fused gat:lglia,and the nerve cords enlarge into ganglia in each segment A peripheral nervous system consisting of nerves branching from the central nervous system ...
... The earthworm has a central nervous system made up of a brain and a pair of solid, ventral nerve cords. The. brain is actually a pair of fused gat:lglia,and the nerve cords enlarge into ganglia in each segment A peripheral nervous system consisting of nerves branching from the central nervous system ...
Introduction
... contain blood vessels and obtain some oxygen from the incoming water currents. The mantle is also vascularized and serves as a respiratory organ. Cilia on the surface of the mantle and gills create water currents in the mantle cavity and draw in water through the incurrent siphon. Food particles con ...
... contain blood vessels and obtain some oxygen from the incoming water currents. The mantle is also vascularized and serves as a respiratory organ. Cilia on the surface of the mantle and gills create water currents in the mantle cavity and draw in water through the incurrent siphon. Food particles con ...
File - Moraski Science
... receptacles of another worm. Fertilization of the eggs takes place outside the body as the cocoon moves forward over the body, picking up the eggs of one worm and the sperm of its mate. The pumping organs of the circulatory system are five aortic arches. Circulatory fluids travel from the arches ...
... receptacles of another worm. Fertilization of the eggs takes place outside the body as the cocoon moves forward over the body, picking up the eggs of one worm and the sperm of its mate. The pumping organs of the circulatory system are five aortic arches. Circulatory fluids travel from the arches ...
Document
... stomach, intestine, and anus (which opens into the atrium): the brain, which is a continuation of the nerve cord of the tail: a sensory vesicle containing an otolith for balance; and a dorsal median eye with lens and pigmented cup. A coelom and a circulatory system are present, but the heart is not ...
... stomach, intestine, and anus (which opens into the atrium): the brain, which is a continuation of the nerve cord of the tail: a sensory vesicle containing an otolith for balance; and a dorsal median eye with lens and pigmented cup. A coelom and a circulatory system are present, but the heart is not ...
Anatomy & Physiology Chapter 1
... • Descriptive or Systemic Anatomy - the method of studying the body by systems, such as auditory and respiratory systems • Regional Anatomy - the study of the body by regions, such as the thorax and abdomen • Applied or Clinical Anatomy - emphasizes structure and function as they relate to diagnosis ...
... • Descriptive or Systemic Anatomy - the method of studying the body by systems, such as auditory and respiratory systems • Regional Anatomy - the study of the body by regions, such as the thorax and abdomen • Applied or Clinical Anatomy - emphasizes structure and function as they relate to diagnosis ...
Meiosis homework Questions ANSWER KEY
... Oogenesis occurs in females, uneven division produces one gamete and three polar bodies (later destroyed). Spermatogensis occurs in males, even division produces four gametes 13. A muscle cell of a mouse contains 22 chromosomes. Based on this information, how many chromosomes are there in the fo ...
... Oogenesis occurs in females, uneven division produces one gamete and three polar bodies (later destroyed). Spermatogensis occurs in males, even division produces four gametes 13. A muscle cell of a mouse contains 22 chromosomes. Based on this information, how many chromosomes are there in the fo ...
Notes Sexual - Weiss World of Science
... Most plants transfer male gametes as __________. Pollen can be carried by wind or other organisms. ...
... Most plants transfer male gametes as __________. Pollen can be carried by wind or other organisms. ...
Class Hirudinomorpha
... Produce calcite crystals that are secreted into esophageal lumen and pass in feces Two functional hypothesis 1) Removal of excess CO2 ...
... Produce calcite crystals that are secreted into esophageal lumen and pass in feces Two functional hypothesis 1) Removal of excess CO2 ...
Follow the instructions carefully, check the boxes as you complet
... The first structures you probably see are the seminal vesicles. They are cream colored and located toward the anterior of the worm. These are used for producing sperm. Use tweezers to remove these white structures from over the top of the digestive system that lies underneath it. If you are lucky an ...
... The first structures you probably see are the seminal vesicles. They are cream colored and located toward the anterior of the worm. These are used for producing sperm. Use tweezers to remove these white structures from over the top of the digestive system that lies underneath it. If you are lucky an ...
Anatomical Positions, Body Planes, and Directional Terms
... No matter how the patient is actually placed, the position and relationship of structures is described as if patient is still in anatomical position. Rule of Thumb: Always look down on your own body when noting the location of an organ, not at me or what is on the screen. ...
... No matter how the patient is actually placed, the position and relationship of structures is described as if patient is still in anatomical position. Rule of Thumb: Always look down on your own body when noting the location of an organ, not at me or what is on the screen. ...
Earthworm Dissection External Anatomy Internal Anatomy
... The digestive system starts at the mouth. You will trace the organs all the way to the anus and identify each on the worm. Find the mouth opening, the first part after the mouth is the pharynx, you will see stringy things attached to either side of the pharynx (pharyngeal muscles) . The esophagus le ...
... The digestive system starts at the mouth. You will trace the organs all the way to the anus and identify each on the worm. Find the mouth opening, the first part after the mouth is the pharynx, you will see stringy things attached to either side of the pharynx (pharyngeal muscles) . The esophagus le ...
Dissection guide - MUGAN`S BIOLOGY PAGE
... female's vulva open during copulation. With a hand lens, find the mouth with three lips, one dorsal and two ventral (Figure 1). Find the ventral anus at the posterior end. The anus in the male not only discharges feces from the rectum but also serves as a genital opening. The female genital opening ...
... female's vulva open during copulation. With a hand lens, find the mouth with three lips, one dorsal and two ventral (Figure 1). Find the ventral anus at the posterior end. The anus in the male not only discharges feces from the rectum but also serves as a genital opening. The female genital opening ...
Earthworm Dissection Lab report
... the posterior end. Then trace the organs all the way to the anus and identify each on the worm. Find the mouth opening, the first part after the mouth is the pharynx, you will see stringy things attached to either side of the pharynx (pharyngeal muscles). The esophagus leads from the pharynx but you ...
... the posterior end. Then trace the organs all the way to the anus and identify each on the worm. Find the mouth opening, the first part after the mouth is the pharynx, you will see stringy things attached to either side of the pharynx (pharyngeal muscles). The esophagus leads from the pharynx but you ...
Human Reproduction Notes
... The most densely innervated and sensitive parts in both males and females are their respective glans and prepuces. ...
... The most densely innervated and sensitive parts in both males and females are their respective glans and prepuces. ...
- Toolbox Pro
... the egg is not fertilized within approximately 24 hours after ovulation, it deteriorates. If fertilization occurs, cleavage of the fertilized egg (zygote) begins in the oviduct, and six to ten days later, the resulting embryo may become implanted in the uterine lining. After this stage of developmen ...
... the egg is not fertilized within approximately 24 hours after ovulation, it deteriorates. If fertilization occurs, cleavage of the fertilized egg (zygote) begins in the oviduct, and six to ten days later, the resulting embryo may become implanted in the uterine lining. After this stage of developmen ...
Sex repro
... Most plants transfer male gametes as pollen. Pollen can be carried by wind or other organisms. ...
... Most plants transfer male gametes as pollen. Pollen can be carried by wind or other organisms. ...
Expression of the Hox gene complex in the indirect development of
... major elements of the respective adult body plans. In the maximally indirect development of a large variety of invertebrates, the process of embryogenesis leads only to a free-living, bilaterally organized feeding larva. Maximal indirect development is exemplified in sea urchins. The 5-fold radially ...
... major elements of the respective adult body plans. In the maximally indirect development of a large variety of invertebrates, the process of embryogenesis leads only to a free-living, bilaterally organized feeding larva. Maximal indirect development is exemplified in sea urchins. The 5-fold radially ...
Ch 35 Mollusks and Annelids
... octopus, squid, cuttlefish, chambered nautilus Marine animals, free swimming Meaning “head-foot” Foot divided into tentacles No shell (except chambered nautilus) ...
... octopus, squid, cuttlefish, chambered nautilus Marine animals, free swimming Meaning “head-foot” Foot divided into tentacles No shell (except chambered nautilus) ...
earthworm dissection
... crop and gizzard. Use your scalpel to make a cross-sectional cut through the intestine about half way along its length. Make sure you cut only through the intestine; do not cut any other body part. Examine the cut end of the intestine with a hand lens or dissecting microscope. The earthworm has a cl ...
... crop and gizzard. Use your scalpel to make a cross-sectional cut through the intestine about half way along its length. Make sure you cut only through the intestine; do not cut any other body part. Examine the cut end of the intestine with a hand lens or dissecting microscope. The earthworm has a cl ...
Avian Extra-embryonic membranes
... to its body to access the nutrients in the egg and to carry out essential body functions. There are four of these special membranes and their names and functions are as follows: Yolk sac: This sac envelops the yolk and produces an enzyme that changes the yolk material to a form that can be used as a ...
... to its body to access the nutrients in the egg and to carry out essential body functions. There are four of these special membranes and their names and functions are as follows: Yolk sac: This sac envelops the yolk and produces an enzyme that changes the yolk material to a form that can be used as a ...
Unit 1 Powerpoint
... 4. Contractility – ability to generate a force resulting in shortening 5. Growth – increase in size ...
... 4. Contractility – ability to generate a force resulting in shortening 5. Growth – increase in size ...
Annelids, Mollusks and Arthropds
... octopuses, squids, cuttlefishes, chambered nautiluses Marine animals, free swimming Meaning “head-foot” ...
... octopuses, squids, cuttlefishes, chambered nautiluses Marine animals, free swimming Meaning “head-foot” ...