Serial Homology:Bones| muscle groips/ compartments

key terms

Pectoral Girdle Homologus Structure?

scapula & clavicle

Pelvic Girdle

Os Coxae

Humerus Homologus Structure?

Femur

Radius-Ulna Homologus structure?

Tibia-Fibula (tib fib)

Carpals (homology)

Tarsals (homology)

Metacarpals (homology)

Metatarsals (homology)

what do we have in upper and lower body? hint:homologus bones same name for both

Phalanges!

define girdle

a ring (or partial ring) of bones that attaches the limbs to the axial skeleton.

what are the four muscle compartments (of the thigh)

-Anterior

-Posterior

-Medial

-lateral

what are the muscle layers

superfical-to-deep

What do muscle groups share?

commonalities

what are the commonalities muscle groups share

-attachments

-functions (work together to create the same movement)

-innervations

what can ball and socket joints do? where are they located

1. flexion, extension,abduction, adduction, rotation

2. hip and shoulder

what can hinge joints do? where are they located?

1. flexion and extension

2. knee and elbow

muscles are attached to ___ bones. (the number)

Muscles cross____

2

Joints!

what happens when a muscle contracts

it shortens

describe what happens when muscle contracts hint (2 answers, shortening is not what i am looking for here) imagine a skeleton with strings | give 2 examples

-it pulls on the bones

-the bones move at the joint

ex. If a muscle crosses the elbow (hinge joint) → it does flexion or extension

• If it crosses the shoulder (ball & socket) → it can do multiple movements

If you know WHAT joint a muscle crosses + WHERE it sits, you can figure out its action give 2 examples

Example:

• Front of elbow → flexion

• Back of elbow → extension

Muscle is Anterior to joint →

muscle action: what does it do for knee and hip

• flexion (hip), extension (knee)

Muscle is Posterior to joint →

muscle action: what does it do for knee and hip

extension (hip), flexion (knee)

define pelvis

bones that connect vertebral column to lower limb