• Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/64

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

64 Cards in this Set

  • Front
  • Back

Structure of Vertebrates

Descriptive

Significance of the structure

Functional

Comparative Anatomy can be considered as...

Vertebrate evolution

Structural evolution

Morphology

Description of Structures

Anatomy

The main significance of Comparative Anatomy

1. Structural Basis of Biology


2. Study Evolution


3. Appreciation of Vertebrates


4. Dissection skills


5. Man's place in the vertebrate world



Anscestral Deuterostome and No Notochord

Echinodermata

What is the Big Five?

1. Notochord and Vertebral Column


2. Dorsal Hollow Nerve Cord


3. Pharynx


4. Endostyle or Thyroid Gland


5. Muscular, Post-Anal Tail

A rod of living cells ventral to the CNS and dorsal to the alimentary canal




Provides skeletal support through out most of the length of the chordate




A more complex, jointed skeleton develops and retains only remnants.

Notochord

Chief axial skeleton surrounded by notochord sheath

Protochordates

Similar to protochordates with addition of lateral neural cartilages

Agnathans

Persist the length of the trunk and tail within the centrum

Fishes and amphibians

Disappears and becomes pulpy nucleus in vertebrae

Reptiles, birds, and mammals

Parts of the vertebrae

1. Centrum (deposited around the notochord)


2. Neural arch (forms over spinal cord)


3. Various processes

Develops from a plate of ectoderm that rolls into a tube dorsal to the notochord

Nerve cord of a chordate embryo

The nerve cord is formed by the process of...

Invagination

The nerve cord develops into the...

Central Nervous System (Brain and Spinal Cord)

Membranous digestive and respiratory organ located at the back of the mouth that serves as passageway of food and air

Pharynx

The pharynx is a vital part of craniate embryo that produces: (THERE ARE SIX)

1. Gills of Fishes (PERMANENT SLITS)


2. Lungs of Tetrapods (TEMPORARY SLITS)


3. Skeleton and Musculature of Jaws


4. Parafollicular cells and Paratyroid glands


5. Auditory and Tympanic Cavity


6. Initial cells of immune system (Thymus in humans)

Endocrine glands that regulate metabolic rates in all body cells and maintain appropriate calcium levels in bones, other tissues, and circulating blood.

Parafollicular cells and Parathyroid glands

A column of tissue that separates each embryonic pharyngeal pouch or slit from the next

Pharyngeal Arches

The FOUR blastemas from which the pharyngeal arches develop:

1. Skeleton


2. Muscles


3. Nerves


4. Blood Vessels

Indentations in the pharyngeal arches where the clefts are lined with the ectoderm

External

Indentations in the pharyngeal arches where the pouches are lined with the ectoderm

Internal

GIVE THE SKELETAL ELEMENTS, MUSCLE, and CRANIAL NERVE of the FIRST ARCH

Skeletal: Meckel's cartilage, Malleus, Incus


Muscle: Muscles of mastication, Anterior belly of digastricus, Tensor Tympani, Tensor palati


Cranial: Trigeminal nerve (Mandibular division)

GIVE THE SKELETAL ELEMENTS, MUSCLE, and CRANIAL NERVE of the SECOND ARCH

Skeletal: Stapes, Styloid process, Upper part of hyoid


Muscle: Stapedius, Stylohyoid, Muscles of facial expression, Posteriour belly of digastricus


Cranial: Facial Nerve

GIVE THE SKELETAL ELEMENTS, MUSCLE, and CRANIAL NERVE of the THIRD ARCH

Skeletal: Lower part of the hyoid


Muscle: Stylopharyngeus


Cranial: Glossopharyngeal nerve

GIVE THE SKELETAL ELEMENTS, MUSCLE, and CRANIAL NERVE of the FOURTH TO SIXTH ARCH

Skeletal: Laryngeal cartilages


Muscle: Cricotyhroideus, Pharyngeal constrictors, Intrinsic laryngeal muscles


Cranial: Vagus Nerve

Components of the Pharyngeal arches

1. Skeletal elements (Pharyngeal Skeleton)


2. Striated Muscles (Branchiomeric Muscles)


3. Cranial Nerves


4. Aortic Arch

Ectodermally-lined grooves on the outside of the embryonic pharynx

Pharyngeal clefts

Develops into the external auditory meatus of the ear and provides the outer epithelium of the tympanic membrane

Pharyngeal clefts

Arises as diverticula of endoderm or foregut

Pharyngeal Pouches

Establishes the limits of the pharynx

Pharyngeal pouches

DERIVATIVES OF FIRST PHARYNGEAL POUCH

Middle ear cavity


Endodermal aspect of tympanic membrane


Pharyngotympanic tube

DERIVATIVES OF SECOND PHARYNGEAL POUCH

Palatine Tonsil

DERIVATIVES OF THIRD PHARYNGEAL POUCH

Inferior parathyroid gland


Thymus

DERIVATIVES OF FOURTH AND FIFTH PHARYNGEAL POUCH

Superior parathyroid gland


Parafollicular cells of the thyroid gland

Formed between the pharynx and the exterior when the pharyngeal plate ruptures

Pharyngeal slits

Glandular groove in the floor of the pharynx and is involved in fliter feeding

Endostyle



An endocrine gland that produces hormone

Thyroid gland

In many species, it is greatly reduced during embryonic development

Muscular, Post-Anal Tail

Three Regional components of craniates

1. Head


2. Trunk


3. Postanal tail



Common sense organs for monitoring external environment

Eyes, Ears, Nose

Centralization or localization of nervous structures and functions in the head with accompanying dominance of the head

Cephalization

Houses most of the visceral organs

Coelom

Consists almost exclusively or a caudal continuation of body wall muscles, axial skeleton, nerves and blood vessels

Post anal Tail

Position when a quaruped stands erect on all four limbs, facing left, with the tail slightly raised

Anatomic position

Any surface, real or imaginary along which any two points can be connected by a straight line

Anatomic Plane

Divides the head, body or any limb longitudinally into equal right and left halves

Median Plane

Passes through the right or left side of the body parallel to the median plane

Sagittal Plane

Passes through the head, body, limb or organ at right angles to the structure's long axis or the median plane

Transverse Plane

Runs at right angles to both the median and transverse planes (horizontally) dividing the body into dorsal and ventral portions

Dorsal Plane

Occurs in an organism if it can be cut into two identical halves through any cut that runs through the organism's center

Spherical

Several cutting planes produce roughly identical pieces (Like a Pie)

Radial

Combination of Radial and Bilateral Symmetry

Biradial

Only one plane, the Median Plane, will divide an organism into roughly mirror images halves.

Bilateral

The only systems that are not bilaterally symetrical

Digestive and Lymphatic systems

Regular repetition of body parts along the cranio-caudal axis


Metamerism or Segmentation

Longitudinal series of divisions in each of which all or most of the body systems are represented

Metamere, Segement or Somite

Segmentation of the animal body into nearly like segments

HOMONOMOUS Segmentation

Various Segments differ from each other

HETERONOMOUS Segmentation

Craniate Characteristics

Cranium


3 part brain


Neural Crests


Paired external sense organs


Cartilage

Vertebrate Characteristics

Vertebral Colum


Two semicircular canals


Electroreception


Lateral line system with multicellular neuromasts


Number of soft tissue specializations

Parts of the Coelom

Pericardial


Pleural


Peritoneal


Scrotal