Skeletal System Overview

<p>It either rests on ground or is suspended between legs. (D)</p> Signup and view all the answers

<p>It can disrupt its intended line of travel. (B)</p> Signup and view all the answers

<p>Pterygoid (A)</p> Signup and view all the answers

<p>Center positioning of the parietal bone (A)</p> Signup and view all the answers

<p>Ectopterygoid (D)</p> Signup and view all the answers

<p>At the midline in a mandibular symphysis (B)</p> Signup and view all the answers

<p>Braincase or neurocranium (C)</p> Signup and view all the answers

<p>It meets the prearticular and coronoids to complete the medial wall. (B)</p> Signup and view all the answers

<p>Dentary (A)</p> Signup and view all the answers

<p>To provide a protective case around the brain (A)</p> Signup and view all the answers

<p>To hold and control struggling prey (A)</p> Signup and view all the answers

<p>They use cilia to move mucus and capture food. (D)</p> Signup and view all the answers

<p>By employing the tongue to reposition the food bolus (C)</p> Signup and view all the answers

<p>They create a vacuum to pull food backwards. (A)</p> Signup and view all the answers

<p>They are absent in vertebrates, indicating a lack of aquatic adaptation. (D)</p> Signup and view all the answers

<p>To capture and secure prey (A)</p> Signup and view all the answers

<p>It often includes mastication of prey. (B)</p> Signup and view all the answers

<p>They catch it with claws and may use jaws for control. (D)</p> Signup and view all the answers

<p>They serve as attachment sites for respiratory and shoulder muscles. (A)</p> Signup and view all the answers

<p>By expanding the thoracic cavity through size and shape changes. (C)</p> Signup and view all the answers

<p>It is present in all modern amphibians without any exceptions. (A)</p> Signup and view all the answers

<p>It provides a larger surface for flight muscle attachment. (A)</p> Signup and view all the answers

<p>Lizards (A)</p> Signup and view all the answers

<p>They are dermally derived elements that enhance abdominal muscle attachment. (A)</p> Signup and view all the answers

<p>They represent a fusion of dermal elements, including contributions from the clavicles. (C)</p> Signup and view all the answers

<p>It provides a rigid enclosure for various viscera. (A)</p> Signup and view all the answers

<p>It consists of both true and floating ribs along with a sternum. (B)</p> Signup and view all the answers

<p>Overcoming dependence on buoyancy for structural support. (A)</p> Signup and view all the answers

<p>Provides shape and supports weight (B)</p> Signup and view all the answers

<p>Skull (D)</p> Signup and view all the answers

<p>From mesoderm and other deeper body tissues (B)</p> Signup and view all the answers

<p>Vertebral column and associated structures (A)</p> Signup and view all the answers

<p>Offers a system of levers with muscles (C)</p> Signup and view all the answers

<p>Exoskeleton is formed from or within the integument (C)</p> Signup and view all the answers

<p>Supports and protects soft parts such as nerves and blood vessels (C)</p> Signup and view all the answers

<p>The system works in conjunction with muscles to enable movement (C)</p> Signup and view all the answers

<p>It includes the chondrocranium, splanchnocranium, and dermatocranium. (D)</p> Signup and view all the answers

<p>To protect the brain and house sensory organ capsules. (C)</p> Signup and view all the answers

<p>It remains entirely cartilaginous and does not ossify. (B)</p> Signup and view all the answers

<p>Dermatocranium (C)</p> Signup and view all the answers

<p>Dermatocranium, chondrocranium, and splanchnocranium. (D)</p> Signup and view all the answers

<p>To provide a protective encasement for the brain. (D)</p> Signup and view all the answers

<p>Nasal capsules (C)</p> Signup and view all the answers

<p>It first arose to support pharyngeal slits. (A)</p> Signup and view all the answers

<p>Composed mainly of dermal bones. (D)</p> Signup and view all the answers

<p>It varies greatly in structure but generally follows a five-component framework. (A)</p> Signup and view all the answers

The system in vertebrates that provides shape, support, and movement, while protecting vital organs.

Internal skeletal system formed from mesoderm and other body tissues, not the integument.

The part of the skeleton forming the skull, protecting the brain.

The part of the skeleton below the skull, including the vertebral column and limbs.

The spine, a crucial part of the postcranial skeleton.

Appendages of the body, such as arms and legs, part of the postcranial skeleton.

The hard, structural components of the endoskeleton.

Parts of the skeleton that connect limbs to the axial skeleton.

A small opening in the parietal bone.

Dermal bones covering the roof of the mouth.

A large, medial bone of the primary palate.

Dermal bones comprising the mandible.

Tooth-bearing bone of the mandible.

Skull's upper and back part, protecting the brain.

Bones forming the rear part of the skull.

Anterior midline meeting point of the two mandibles.

The skull, a complex structure composed of three parts for enhanced support and protection.

Part of the skull, initially supporting pharyngeal slits in early vertebrates.

The underlying and supporting cartilage or bone structure of the skull, protecting the brain.

Part of the skull, forming most of the outer skull casing in later vertebrates, made of dermal bones.

Equivalent to the Chondrocranium, the primitive cartilaginous part of the skull supporting the brain and sensory capsules. It also envelopes the brain.

The study of how the initial cartilaginous structure of the skull forms and develops, enveloping the embryonic brain.

The primitive cartilaginous skull structure includes sphenoids, mesethmoid, occipitals, optic capsules, and nasal capsules.

In cartilaginous fishes, the chondrocranium does not ossify (turn to bone).

The act of seizing or grasping food, often using a specialized structure like a beak or claws.

Paired bony structures in the mouth used for biting, chewing, and holding prey.

The process of moving food from the mouth, through the pharynx and esophagus, to the stomach.

The process of chewing food, breaking it down into smaller pieces.

Animals that filter food particles from water using specialized structures.

Animals that use suction to create a current that draws prey into their mouth.

The coordinated movement of hair-like structures called cilia, creating a current to move food or fluids.

The mouth cavity, the space within the mouth.

The rib cage, composed of ribs and sternum, protects vital organs like the heart and lungs.

Ribs that directly connect to the sternum, providing a stable structure.

Ribs that don't attach directly to the sternum, offering more flexibility.

Projections on ribs that act as attachment points for respiratory and shoulder muscles.

Uncinate processes and the rib cage provide surfaces for respiratory muscles to attach to.

The sternum can be a single bony plate or multiple elements, supporting the rib cage.

The posterior part of the sternum, often with a xiphoid process for muscle attachment.

The anterior part of the sternum in some amphibians, situated near the pectoral girdle.

A prominent keel-like structure on the sternum of birds, providing increased surface area for flight muscle attachment.

The chain of bone elements that make up the sternum in most mammals.

The shape of an organism's body designed to reduce drag forces when moving through a fluid medium, like water.

Streamlining minimizes the resistance an organism encounters while moving through water, improving its swimming efficiency and speed.

Fins on a fish that help maintain balance and prevent the body from deviating from its intended path while swimming.

The way terrestrial animals with four limbs support their bodies, either resting on the ground between sprawled legs or suspended between pairs of legs.

The function of a tetrapod's legs as supports that brace the body and prevent it from collapsing.