Pharyngeal arches Study guides, Class notes & Summaries

Scientists hypothesize that vertebrate jaws evolved from: a. Vertebrae b. Gill arches c. Teeth d. Scales e. Skin correct answers b Which of the following is not a unifying feature of all chordates? a. Cranium b. Notochord c. Post-anal tail d. Pharyngeal gill slits (or pouches) correct answers a Which feature is unique to the echinoderm lineage? a. Water vascular system b. Radial symmetry c. Endoskeleton d. Exoskeleton correct answers a Which vertebrate has jaws with movable...

CMMB 403 Final Exam Actual Questions and Answers with complete solution What are the origins of the optic vesicle and the lens? - answeroptic vesicle = forebrain (neural ectoderm) lens = surface epidermis --> placode Describe the process of lens induction - answer1. the optic vesicle (forebrain) induces thickening of the surface epidermis (prospective lens placode) 2. the optic vesicle pinches in to form the optic cup and the lens invaginate as well (lens placode comes into contact w/...

The posterior superior alveolar artery and its branches supply the A. maxillary posterior teeth and periodontium B. mandibular posterior teeth and periodontium C. sternocleidomastoid muscle and thyroid gland D. temporalis muscle and parotid salivary gland Correct Answer maxillary posterior teeth and periodontium *Which of the following descriptions concerning the pterygoid plexus of veins is CORRECT? A. Located around the infrahyoid muscles Protects the superficial temporal artery C. ...

JMU BIO 290 FINAL REVIEW QUESTIONS AND ANSWERS, GRADED A+ somites definition - -segmental embryonic cells, lie in pairs along the spinal cord Vertebrates are _________________ animals: we exhibit _________________________ of structures along the longitudinal axis of the body. - -segmental/ serial repetition What are the Somatic Trunk structures? - -1. vertebrae and ribs 2. axial muscles (back and abs) 3. urogenital system 4. skin *also somatic nervous system* Non-segmental trunk struc...

WSU Biology 106 Exam 3 Questions Marking Scheme Spongocoel - ANSWER- the large central cavity of sponges. water enters the spongocoel through tiny pores called ostia and it exits through the large opening called the osculum. spongocoel is lined with choanocytes which help to create a current in the water. Spicule - ANSWER- structural elements found in most sponges. They provide structural support and deter predators. Large ones are called megascleres while microscopic ones are calle...

NDAEB Exam Review Part 2 Questions and Answers 100% Solved What portion of the mouth does the palate make up? - answerSuperior portion of oral cavity as well as inferior portion of nasal cavity Palate - answerRoof of mouth What portion of the mouth is the hard palate located? - answerAnterior portion Hard palate consists of what tissue? - answerCovered by a thin epithelial (tissue) casing known as the oral mucosa Oral Mucosa - answerMade of sense, highly proliferating (growing) tissue th...

Concise and easy to access notes on embryology and development for first year dental students. Covers tooth development, embryology, the pharyngeal arches, development of the face & palate, post-natal growth of the skull, the temporomandibular joint (TMJ), suture development, tooth morphogenesis, root development, tooth eruption and salivary gland development.

Which of the following is an incorrect match of structure and function? Cnidocyte - capturing prey Parapodia - defense from enemies Radula - obtaining food Mantle - secretes the shell Chelicerae - consuming food - Parapodia - defense from enemies (gas exchange, locomotion, protection) In a cnidarian life cycle, -Medusae have gonads and produce gametes -Polyps bud off from other polyps -Medusae bud off from polyps -Polyps grow from ciliated larvae - All of the above ...

WSU Biology 106 Exam 3 Questions Marking Scheme Spongocoel - ANSWER- the large central cavity of sponges. water enters the spongocoel through tiny pores called ostia and it exits through the large opening called the osculum. spongocoel is lined with choanocytes which help to create a current in the water. Spicule - ANSWER- structural elements found in most sponges. They provide structural support and deter predators. Large ones are called megascleres while microscopic ones are calle...

Macule is flat and discoloured, not palpable. Papule is palpable and raised above the skins surface - solid. Both <1cm in diameter. Difference between a macule and a papule? Sun exposure, family history, fair skin, radiation exposure, chemical exposure (i.e. arsenic) What are the risk factors for skin cancer? Superficial vs. deep What are the two groups of lymph nodes? A cluster of immune structures in the neck that contribute to the activation of adaptive immunity...