External Anatomy of Insects: The Exoskeleton, Head
... hard, sclerotized plates, the cervical sclerites, are embedded in its integument. The insect thorax consists of three segments, each of which bears a pair of legs. The legs are segmental appendages. Two of the thoracic segments may bear paired wings, which are complex folds of the body wall not seg ...
... hard, sclerotized plates, the cervical sclerites, are embedded in its integument. The insect thorax consists of three segments, each of which bears a pair of legs. The legs are segmental appendages. Two of the thoracic segments may bear paired wings, which are complex folds of the body wall not seg ...
Frog Dissection Guide
... use scissors to cut along the center of the body from the cloaca to the lip. Turn back the skin, cut toward the side at each leg, and pin the skin flat. The diagram above shows how to make these cuts Lift and cut through the muscles and breast bone to open up the body cavity. If your frog is a femal ...
... use scissors to cut along the center of the body from the cloaca to the lip. Turn back the skin, cut toward the side at each leg, and pin the skin flat. The diagram above shows how to make these cuts Lift and cut through the muscles and breast bone to open up the body cavity. If your frog is a femal ...
crayfish lab - Sardis Secondary
... You are responsible for writing your own purpose. Procedure: 1. Remove all the appendages from one side of the crayfish. Sketch these in order from anterior to posterior. Name each appendage. Briefly describe the function of each set of appendages. This answer must be in chart form. 2. Use scissors ...
... You are responsible for writing your own purpose. Procedure: 1. Remove all the appendages from one side of the crayfish. Sketch these in order from anterior to posterior. Name each appendage. Briefly describe the function of each set of appendages. This answer must be in chart form. 2. Use scissors ...
Lab
... 2- Divisions of the body are the head, neck, trunk, with two pairs of limbs, and tail. 3- In the head, note the anterior mouth bounded by two mobile lips (characteristic of mammals); the upper lips is divided by a median cleft which connects the mouth with the external nostrils which are lie on the ...
... 2- Divisions of the body are the head, neck, trunk, with two pairs of limbs, and tail. 3- In the head, note the anterior mouth bounded by two mobile lips (characteristic of mammals); the upper lips is divided by a median cleft which connects the mouth with the external nostrils which are lie on the ...
invertebrate zoology..
... 1) these lobes are supported by one or more chitinous spines (acicula). f) feeds on small animals, other worms, larval forms B. Class Oligochaeta = "few long hairs" 1) Setae may be long/short, straight/curved, blunt/needlelike, single/in bundles although less setae than in Polychaeta (hence the name ...
... 1) these lobes are supported by one or more chitinous spines (acicula). f) feeds on small animals, other worms, larval forms B. Class Oligochaeta = "few long hairs" 1) Setae may be long/short, straight/curved, blunt/needlelike, single/in bundles although less setae than in Polychaeta (hence the name ...
Protostomes
... (1) foot: a large muscle located at the base of the animal and usually used in movement (2) visceral mass: the region containing the internal organs and external gill (3) mantle: a tissue layer that covers the visceral mass and that secretes a shell in some species • In molluscs, the coelom's functi ...
... (1) foot: a large muscle located at the base of the animal and usually used in movement (2) visceral mass: the region containing the internal organs and external gill (3) mantle: a tissue layer that covers the visceral mass and that secretes a shell in some species • In molluscs, the coelom's functi ...
Insects Arachnids
... Insects have 3 body segments. Arachnids have 2 body segments. 4. Name one similarity between insects and arachnids. ...
... Insects have 3 body segments. Arachnids have 2 body segments. 4. Name one similarity between insects and arachnids. ...
Lepidoptera - Missouri Botanical Garden
... (caterpillars) eat, grow and molt. This stage is repeated a varying number of times, depending on species, until hormonal changes cause the larvae to pupate. Inside the pupal case, they change in form and color, exchange chewing mouthparts for sucking, and develop wings. The emerging adults look com ...
... (caterpillars) eat, grow and molt. This stage is repeated a varying number of times, depending on species, until hormonal changes cause the larvae to pupate. Inside the pupal case, they change in form and color, exchange chewing mouthparts for sucking, and develop wings. The emerging adults look com ...
Comparative Anatomy
... inherited from a common ancestor. Their bodies have been modified and parts have been lost through natural selection, resulting in adaptation to their respective lifestyles over millions of years. On the surface, these animals look very different, but the relationship between them is easy to demonst ...
... inherited from a common ancestor. Their bodies have been modified and parts have been lost through natural selection, resulting in adaptation to their respective lifestyles over millions of years. On the surface, these animals look very different, but the relationship between them is easy to demonst ...
Winter 2016 Bio 94 Activity- Week 6
... Protostomes and deuterostomes are the two main groups of bilaterally-symmetric animals with three germ cell layers. The two main differences between these groups are found in the developmental stages: gastrulation and coelom formation. ...
... Protostomes and deuterostomes are the two main groups of bilaterally-symmetric animals with three germ cell layers. The two main differences between these groups are found in the developmental stages: gastrulation and coelom formation. ...
Annelid lab info
... - body covered in a dense mat of setae, received its name due to its ventral appearance (which is what?) animal lifestyle? ...
... - body covered in a dense mat of setae, received its name due to its ventral appearance (which is what?) animal lifestyle? ...
o Superior Labrum Anteriorposterior (SLAP) Lesion (Torn Labrum) o
... o Superior Labrum Anteriorposterior (SLAP) Lesion (Torn Labrum) SLAP lesions are tears in the superior glenoid labrum near the attachment site for the long head of the biceps brachii tendon. Increased tension on this tendon causes it to pull away from the labrum, subsequently resulting in a tear. ...
... o Superior Labrum Anteriorposterior (SLAP) Lesion (Torn Labrum) SLAP lesions are tears in the superior glenoid labrum near the attachment site for the long head of the biceps brachii tendon. Increased tension on this tendon causes it to pull away from the labrum, subsequently resulting in a tear. ...
Phylum Nematoda The Roundworms
... – Jointed appendages (legs, antennae, reproductive appendages, mouth or feeding appendages) – Ectoskeleton (exoskeleton) from ectoderm; must be shed periodically (molt = ecdysis); made of chitin – Segmented body divided into three regions (tagma = body division) • Head • Thorax • Abdomen ...
... – Jointed appendages (legs, antennae, reproductive appendages, mouth or feeding appendages) – Ectoskeleton (exoskeleton) from ectoderm; must be shed periodically (molt = ecdysis); made of chitin – Segmented body divided into three regions (tagma = body division) • Head • Thorax • Abdomen ...
25 PowerPoint – Invertebrates
... Organs – a group of tissues that work together Organ Systems – a group of organs that work ...
... Organs – a group of tissues that work together Organ Systems – a group of organs that work ...
Analogous structures They appear similar but are from different
... A recently extinct animal from Australia, Tasmania, and New Guinea. It received the common names of Tasmanian Tiger or Tasmanian Wolf because it looked like a wolf or a tiger. • The Thylacine was a marsupial, and not closely related to tigers or wolves. • It did not share a recent ancestor with the ...
... A recently extinct animal from Australia, Tasmania, and New Guinea. It received the common names of Tasmanian Tiger or Tasmanian Wolf because it looked like a wolf or a tiger. • The Thylacine was a marsupial, and not closely related to tigers or wolves. • It did not share a recent ancestor with the ...
Animal Systematics
... with alternating longitudinal and circular muscles, setae, and metanephridia (excretion) • closed circulatory system • several specialized regions in digestive tract • cerebral ganglia with ventral nerve cord ...
... with alternating longitudinal and circular muscles, setae, and metanephridia (excretion) • closed circulatory system • several specialized regions in digestive tract • cerebral ganglia with ventral nerve cord ...
Biology 320 Invertebrate Zoology Fall 2005
... Two ventral longitudinal nerve cords with giant axons ...
... Two ventral longitudinal nerve cords with giant axons ...
Insect taxonomic diversity
... THE SMALLER INSECT ORDERS. THEY ARE LONG, SLENDER, FLATTENED INSECTS THAT COME IN VARIOUS SHADES OF BROWN OR BLACK. ...
... THE SMALLER INSECT ORDERS. THEY ARE LONG, SLENDER, FLATTENED INSECTS THAT COME IN VARIOUS SHADES OF BROWN OR BLACK. ...
classification & diversity
... Relates to the form of the hind wings; membranous and appearing twisted and wrinkled. Males - forewings reduced to clublike structures Males - with the hind wings large and fanlike. Mouthparts vestigial Small insects 0.5-4 mm. Females are generally saclike without appendages or bedbuglike ...
... Relates to the form of the hind wings; membranous and appearing twisted and wrinkled. Males - forewings reduced to clublike structures Males - with the hind wings large and fanlike. Mouthparts vestigial Small insects 0.5-4 mm. Females are generally saclike without appendages or bedbuglike ...
directional terms - Blue Valley Schools
... Anterior (or Cranial) means the structure is closer to the head of the animal. Posterior (or Caudal) indicates that the structure being described is closer to the tail. For structures on the head, rostral means the structure is closer to the nose, and caudal means the structure is closer to the back ...
... Anterior (or Cranial) means the structure is closer to the head of the animal. Posterior (or Caudal) indicates that the structure being described is closer to the tail. For structures on the head, rostral means the structure is closer to the nose, and caudal means the structure is closer to the back ...
Hox - University of Evansville Faculty Web sites
... • Opabinia is thought to have lived in the soft sediment on the seabed, although it presumably could have swum after prey using its side lobes. • Superficially, Opabinia resembles a crustacean, but lacks important, distinguishing details. • It remains unassigned to any other extinct or currently liv ...
... • Opabinia is thought to have lived in the soft sediment on the seabed, although it presumably could have swum after prey using its side lobes. • Superficially, Opabinia resembles a crustacean, but lacks important, distinguishing details. • It remains unassigned to any other extinct or currently liv ...
Anterior Chamber Spectral Domain-Optical Coherence Tomography
... of dose administration. By imaging the iridocorneal angle, changes in angle can be monitored over the duration of a safety assessment study. SD-OCT provides the capability for non-invasive imaging of anterior segment ocular structures. This technique is particularly suited to topical ocular instilla ...
... of dose administration. By imaging the iridocorneal angle, changes in angle can be monitored over the duration of a safety assessment study. SD-OCT provides the capability for non-invasive imaging of anterior segment ocular structures. This technique is particularly suited to topical ocular instilla ...
Slide ()
... Bronchopulmonary segments of human lung. Left and right upper lobes: (1) apical, (2) posterior, (3) anterior, (4) superior lingular, and (5) inferior lingular segments. Right middle lobe: (4) lateral and (5) medial segments. Lower lobes (6): superior (apical), (7) medial–basal, (8) anterior–basal, ( ...
... Bronchopulmonary segments of human lung. Left and right upper lobes: (1) apical, (2) posterior, (3) anterior, (4) superior lingular, and (5) inferior lingular segments. Right middle lobe: (4) lateral and (5) medial segments. Lower lobes (6): superior (apical), (7) medial–basal, (8) anterior–basal, ( ...
Arthropod head problem
The arthropod head problem is a long-standing zoological dispute concerning the segmental composition of the heads of the various arthropod groups, and how they are evolutionarily related to each other. While the dispute has historically centered on the exact make-up of the insect head, it has been widened to include other living arthropods such as the crustaceans and chelicerates; and fossil forms, such as the many arthropods known from exceptionally preserved Cambrian faunas. While the topic has classically been based on insect embryology, in recent years a great deal of developmental molecular data has become available. Dozens of more or less distinct solutions to the problem, dating back to at least 1897, have been published, including several in the 2000s.The arthropod head problem is popularly known as the ""endless dispute"", the title of a famous paper on the subject by Jacob G. Rempel in 1975, referring to its seemingly intractable nature. Although some progress has been made since that time, the precise nature of especially the labrum and the pre-oral region of arthropods remain highly controversial.