thorax

Walking legs

..., if we were able to express UBX throughout the thorax , we would expect that instead of having the five pairs of walking legs , we would actually get more walking legs , and they would be up towards the head, ... Full article >>> The first pair of appendages are chelicerae, second pair ...

Ventral

...Full article >>> Anterior (head and thorax ) Posterior ( abdomen ) Dorso- ventral Terminal (special structures at the unsegmented ends of the embryo ) ... Full article >>> Counter-illumination. Having bioluminescent organ s that are concentrated on the ventral surface...

Tracheae

...rasshopper, the first and third segment s of the thorax have a spiracle on each side. Another 8 pairs of spiracles are arranged in a line on either side of the abdomen . Full article >>> tracheae : the branching network that extends from holes to all parts of an anthropod body to assis...

Trachea

...l respiration with openings on the sides of the thorax and abdomen called spiracles leading to the tubular trachea l system. Air reaches internal tissue s via a network of branches from the trachea l system. Full article >>> When a bird inhales, air flows in through the trachea t...

Thorax

.... C. V. Mosby ... Full article >>> thorax -- In insects, the second body region, between the head and thorax . It is the region where the legs and wings are attached. till -- n. unstratified glacial drift cons...

Thoracic cavity

...ity in which the heart and lungs are located. thorax In many arthropods, one of three regions formed b...62;> thoracic cavity The space within the thorax . Covered in Lab 15 Rat Muscular and Digestive Systems ... Full article >>> The lung...

Spiracles

...l respiration with openings on the sides of the thorax and abdomen called spiracles leading to the tubular trachea l system. Air reaches internal tissue s via a network of branches from the trachea l system. Full article >>> They exchange gases through a trachea l system, with ext...

Segment

...nnae and mouth parts. 3 segment s make up the thorax . Each thoracic segment has a pair of legs (insects are the six-legged creatures). Full article >>> Segment ation is a result of global optimization of a new objective function that finds the most homologous consequent partition o...

Pleura

... pleura The membrane that lines each half of the thorax and covers the lungs . pleurite Lateral scleri...rs the lung and lines the innermost wall of the thorax . Covered in Lab 16 Rat Respiratory and Circulatory System s ... Full article >>> Ea...

Pelvic girdle

...n The portion of a tetrapod 's body between the thorax and pelvic girdle .The region of an arthropod's body behind the thorax . It contains the viscera l organ s. abducens A nerve. abduct An action . Full article >>...

Pectoral girdle

...serves to protect and support the organ s in the thorax . Full article >>> shoulder blade or dorsal part of pectoral girdle Source: Noland, George B. 1983. General Biology , 11th Edition. St. Louis, MO. C. V. Mosby What Topic Is Your BIOLOGY Paper On? Full article >>> ...

Morphology

... looked at where one of the homeotic genes-ultrabi thorax -was express ed in different species of crustacea ns and asked, "Did that expression correlate with differences in the morphology between different types of ... Full article >>> In the presegmentation, two parallel strategies a...

Lymphatic system

...domen and pelvis The lymphatic vessels of the thorax ... Full article >>> A cancer of the lymphatic system manifested by tumours in the jaw, often associated with a translocation bringing a specific onco gene next to a novel regulatory element. A B C D E F G H I J K L M N O P Q ...

Intercostal muscles

...rates that, with the ribs, form the walls of the thorax . internal nares two small openings in the roof of the buccal cavity . Full article >>> The external intercostal muscles contract, lifting the ribs up and out. The diaphragm contracts, drawing it down . Full article >>&...

Insecta

...x legs, three distinct regions to the body (head, thorax , and abdomen ), one pair of antennae, ... Full article >>> The Class Insecta Insects are the largest group, with probably over one million identified and named species (and undoubtedly a greater number as yet unknown to us). F...

Ecdysone

... There are two prothoracic glands located in the thorax . Under the influence of PTTH, they secrete the steroid hormone ecdysone . Full article >>> ecdysone Molting hormone of arthropods, stimulates growth and ecdysis, produced by prothoracic glands in insects and Y organ s in crus...

Diaphragm

... by the muscular diaphragm at the bottom of the thorax . Contr action of the diaphragm vertically expands the cavity in which the lung is enclosed. Relaxation of the diaphragm has the opposite effect. Full article >>>...

Crustacea

...cts) Myriapoda Chelicerata Crustacea Head and thorax fused into a cephalothorax . At least 40,000 s... looked at where one of the homeotic genes-ultrabi thorax -was express ed in different species of crustacea ns and asked, ... Full article >>>...

Class

...x legs, three distinct regions to the body (head, thorax , and abdomen ), one pair of antennae, and one or two pairs of wings. Full article >>> Mimics: a class ic textbook example trashed How do squirrels "know" 3.8 is the magic number? For female isopods, size doesn't matter ... Full art...

Cephalothorax

cephalothorax head fused with the thorax Source: Noland, George B. 1983. General Biology ...2;>> cephalothorax The fused head and thorax occurring in many Arthropods, particularly Crustacea ns. Covered in Lab 12 Animal Diversity II ....

Carapace

... of a Crustacea n that spreads over the head and thorax . Covered in Lab 12 Animal Diversity II ... Full article >>> Exoskeletal protection is offered by shell s, carapace s (consisting of calcium compound s or silica) and chitin ous exoskelotons. A true endoskeleton (that is, pro...

Capsule

... of a Crustacea n that spreads over the head and thorax . Covered in Lab 12 Animal Diversity II ... Full article >>> renal capsule : The membranous covering of the kidney . cortex : The outer layer over the internal medulla . It contains blood vessels , glomeruli (which are the ...

Blastoderm

...fication can be distinguished: Anterior (head and thorax ) Posterior ( abdomen ) Dorso- ventral Terminal (special structures at the unsegmented ends of the embryo ) ... Full article >>> Ci protein first appears dorsal ly in the cellular blastoderm of embryo s (Fig 1A). (Motzny, ...

Abdomen

...nsects, the third body region behind the head and thorax . absorption -- The taking in of water and disso...n The portion of a tetrapod 's body between the thorax and pelvic girdle .The region of an arthropod's body behind the thorax . It contains the viscera...