Lab 2 - Skeletal System & Skulls

A mammals bottom jaw is made up of a single _______ bone

Dentary

Jaw articulation in MAMMALS

Dentary → Squamosal

Jaw atriculation in REPTILES

Articular → Quadrite

Like reptiles, Mammals also have a _______ and _____ bone, but it is in the ear.

Malleus (Articular) and Incus (quadrate)

Vertebral column (top to bottom)

1. Cervical (7)

2. Thoracic (12)

3. Lumbar (5)

4. Sacral/Sacrum (varies)

5. Caudal (varies)

A way to remember the vertebral column

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Shoulder/Front leg

1. Scapula (shoulder blade)

2. Humerus (upper arm)

3. Ulna (elbow → pinky)

4. Radius (elbow → thumb)

5. Carpels (wrist bones)

6. Metacarpels (hand bones)

7. Phalanges (fingers)

A way to remember the Shoulder/Front leg

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Hips

1. Ilium (Hip bones)

2. Pubis (Pubic bone)

3. Ischium (sitting bones)

A way to remember the Hips

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Back Leg

1. Femur (thigh)

2. Patella (Knee cap)

3. Tibia (Knee → ankle)

4. Fibula (side of leg)

5. Tarsals (Ankle bones)

6. Metatarsals (feet bones)

7. Phalanges (Toes)

A way to remember the back leg

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A (High round part)

Coronoid Process

B (Where muscle sits)

Masseteric Fossa

C (One whole lower jaw bone)

Dentary

D (Horizontal nub)

Mandibular Condyle

A (nose)

Nasal

B (Where incisors are)

Premaxilla

C (Top of head)

Parietal

D (Forehead)

Frontal

E (Back of upper jaw)

Squamosal)

F (Round high part)

Jugal

G (Line to back of skull)

Sagittal Crest

H (line from orbital process to sagittal crest)

Temporal ridge

I (Rest of teeth)

Maxilla

The ______ _______ _______ is the process (point) above the orbital.

Post orbital process

The _______ _______ is where the Squamosal and Jugal meet)

Zygomatic arch

The _____ ______ ______ is the ear hole.

External auditory canal

Number 14 is the…

Palatine

The V shaped bone inside of the nose is called the ____

Vomer

________ means hole.

Foramen

__________ foramen are the holes behind the incisors.

Incisive

________ foramen is the hole under orbital

Infraorbital

18 (Guitar pick)

Basisphenoid

16 (Tiny diamond)

Presphenoid

17 (Wings)

Pterygoid

26 (Big bumps)

Auditory Bulla

23 (Where skull meets neck)

Occipital Condyle

24 (Hole where cords go)

Foramen magnum

27 (hold on the back of orbital curvey thing)

Mandibular fossa