Foregut - Study guides, Class notes & Summaries

Embryonic folding By the end of the fourth week of development, the embryo has already begun to take human form. It is nearly completely lined on the outside with ectoderm. Inside, the neural tube is continuing to develop within the dorsal mesenchyme. Adjacent to the neural tube, somites are forming in a segmental fashion. Lateral to this, intermediate mesoderm is beginning to form structures of the urogenital system and gonads. The lateral plate mesoderm had split into splanchnopleuric and s...

Endoderm develops into - ANSWER 1. Organs 2. GI tract 3. Respiratory tract Paraxial mesoderm is divided into - ANSWER 1. Somatic 2. Splanchnic Somatic paraxial mesoderm develops into - ANSWER Skeletal muscle Splanchnic paraxial mesoderm develops into - ANSWER Visceral smooth muscle Intermediate mesoderm develops into - ANSWER 1. Urogenital system 2. Kidneys Lateral plate mesoderm develops into - ANSWER 1. Adrenal cortex 2. Blood and lymph cells Ectoderm is divided into - ANSWER 1. Sur...

AIMS (Alberta Infant Motor Scale) - correct answer Observation in various positions - best indicator of atypical motor dev in later months (0-18 months) (GMA) General Movement Assessment - correct answer Video spontaneous mvmts with no stim; better for 1st months of life (preterm to 4 months PMA) TIMP (Test of Infant Motor Performance) - correct answer Observation/admin of elicited items; assesses mvmt, postural control & function (32 wks PMA to 4 months) Problems with assessment of pre...

Chondrification mesoderm being replaced by cartilage Ossification cartilage being replaced by bone two types of ossification intramembranous and endochondral mesenchymal tissue into bone/ clavicle & all flat bones of the skull intramembranous/intramedullary ossification perform in cartilage = ossification for all other bones other than the flat bones of the skull endochondral ossification what type of ossification is the the scapula? both intramembranous and endoch...

GIT EXAM QUESTIONS WITH ALREADY PASSED ANSWERS!!

What does insect hemolymph transfer in the body? Nutrients, wastes, hormones, immune cells and peptides, BUT NEVER O2!! What kind of circulatory system do insects have? open circulatory system: hemolymph is in direct contact with tissues Brainpower Read More What is the dorsal vessel? Main circulatory organ of insects. It spans the entire length of an insect's body on the dorsal side. Anterior: aorta. Posterior: heart What are Alary muscles? muscles that hold the heart in...

chewing insects - ANSWER-Mandibles & maxillae cut off & shred food & push food into cibarium. Hypopharynx pushes food into the pharynx. Food moved from pharynx by peristalsis Sucking insects - ANSWER-Pharynx forms bulb-like pharyngeal pump that pushes food through beak to area of peristaltic control Digestion - ANSWER-Breaking down & changing food so it can be absorbed by gut epithelium allowing entry into blood for distribution around body Salivary (labial) glands - Chewing - ANSWER-Sali...

What embryologic germ layer is the gut and respiratory tract derived from? The endoderm What embryologic germ layer gives rise to tubular structures (stuff that is inside)? The endoderm Mesoderm gives rise to how many subgroups? 4 subgroups What are the 4 subgroups of mesoderm? 1. Paraxial mesoderm 2. Intermediate mesoderm 3. Head mesoderm 4. Lateral Plate mesoderm What embryologic germ layer gives rise to somites? Paraxial mesoderm What embryologic g...

Mesoderm, what are the derivatives? Paraxial Intermediate Head Lateral plate Paraxial - Somites (31) Intermediate - Urogenital system and kidneys Head - Skull, MM, CT of head, dentine Lateral plate - Adrenal cortex, blood & lymph, spleen spleen and adrenal cortex are from mesoderm lateral plate Kidneys are from mesoderm intermediate Anterior pituitary and lens of eye are from surface ectoderm enamel is from surface ectoderm Neuroectoderm consists of...

what is embryology? the study of prenatal development Embryo is what time period of development? 2nd to 8th week development Fetus is what time period of development? 9th week to birth what is development? maturation, becoming older what is growth? increase in weight or special dimension (increase in cell numbers, cell size or cell productions) facial development beings when? 4th week what is congenital malformation? birth defects congeni...