Lab - Dogfish Shark Skeleton Flashcards
Name and describe the two parts of the vertebrate skeleton
Dermal skeleton - dermal bone, which develops in the dermis of the skin and is superficial Endoskeleton - Internal, regular skeleton
What are the two parts of the endoskeleton? Briefly describe each
Somatic skeleton - “outer tube”, refers to skin and muscular system Visceral skeleton - “inner tube”, typically refers to bones associated with gut, and the visceral arches
Define the difference between axial and appendicular skeletons? Name components of each
The axial skeleton consists of all the “important” parts of the skeleton: the head, vertebrae, median fin skeleton, ribs, and sternum The appendicular skeleton consists of appendages such as paired limbs and fins
What are the names of visceral arches? Where are they located?
The first one is the jaws/mandibular arch, consisting of upper and lower jaws. The second one is the hyoid arch, a modifies visceral arch used to support the jaws. The third to seventh gill arches are referred to as the branchial arches
The cavity in which the brain lies is the _____
Cranial cavity
Name the structures labelled 1-9. Define A and B as dorsal or ventral views
- Rostrum
- Rostral Carina
- Nasal capsule
- Rostral fenestra
- Superficial opthalmic foramina
- Orbit
- Basitrabecular process
- Basal Plate
- Otic capsule
- Parietal fossa
- Epiphyseal foramen
A - dorsal
B - ventral
Name the structures labelled 1 and 2
- Optic foramen
- Basitrabecular process
Name structure #1
- Foramen magnum
Name the structures labelled 1-12
- Palatoquadrate Cartilage
- Labial cartilage
- Mandibular cartilage
- Ceratohyl
- Gill rakers
- Ceratobranchials
- Epibranchial
- Pharyngobranchial
- Gill rays
- Hyomandibula
- Adductor mandibulae process
- Orbital process
Name the structures labelled 1-9. What is missing from the branchial arches in this photo?
- Palatoquadrate cartilage
- Mandibular cartilage
- Adductor mandibulae process
- Basihyl
- Ceratohyl
- Hypobranchials
- Ceratobranchials
- Basibranchials
- Pharyngobranchials
The epibranchials, which are located between the ceratobranchials and pharyngobranchials
______ support gill tissue and _______ block passage of foreign material into gills
Gill rays, gill rakers
Name the structures labelled 1-5. Is this a caudal or trunk section?
- Neural/vertebral arch
- Spinal cord
- Notochordal tissue
- Hemal canal
- Hemal arch
Caudal
Name the structures labelled 1-4. Is this section caudal or trunk?
- Spinal cord
- Vertebral arch
- Notochordal tissue
- Basophysis
Trunk
Name the structures labelled 1-12
- Scapulacoracoid
- Suprascapular cartilage
- Scapular process
- Coracoid bar
- Propterygium
- Mesopterygium
- Mertapterygium
- Iliac process
- Ischiopubic bar
- Propterygium
- Metapterygium
- Radial pterygiophores
