BIO 2100 Exam 2

the study of ligaments and related joints

Syndesmology

True or false: more joints in childhood than adulthood

true

Classify these: Sutures, Syndesmosis, Gomphosis

Fibrous Joint

Classify: Primary & Secondary Cartilaginous Joints

Cartilaginous Joint

Ball & Socket, Saddle, Condylar, Ellipsoid, Hinge, Pivot, Plane joints

Synovial Joint

3 Functional classification of joints

Synarthrosis, Amphiarthrosis, Diarthrosis

Where bones are bound by tough, fibrous tisse

Fibrous Joint

True or false: Fibrous joints require strength and stability

true

Sutures are between flat bones in skull

true

sutures are immovable joints

ture

sututres have limited movement until age 20

true

Gomphoses are immovable joints

true

where are gomphoses found?

teeth sockets in the maxilla and mandible

Syndesmoses are slightly moveable

true

give examples of syndesmoses

radioulnar joint, middle tibiofibular joint

Synchondrosis are immovable

true

What unites the bones at a symphysis joint?

fibrocartilage

examples of symphysis

pubic symphysis, joints between vertebrae

Synovial joints are freely moveable

true

synovial are the least common joint in body

false, most common

example of a hinge joint

elbow joint, ankle joint, knee joint

what action do hinge joints do>

flexion and extension

how many planes do hinge joints permit?

one plane

examples of a condylar joint?

knee joint, temporomandibular joint,

Examples of an Ellipsoid Joint

wrist joint, atlanto occipital joint

example of a ball and socket joint?

hip and shoulder joint

example of synarthroses

sutures

what is the functions of synaarthroses?

fixed joints where there is no movement

example of Amphiarthrosis

intervertebral discs

function of Anphiarthrosis

joints where slight movement

example of Diathrosis

all synovial joints

function od diarthrosis

freely moveable joints

name the labeled parts

1: articular cartilage

2: synovial layer

3: fibrous layer

4: joint cavity

what is the fibrous layer called?

capsular ligament

What is hilton’s law?

nerves supplying joint must also supply the muscle and skin

connective tissue layer covering each muscle fiber

endomysium

layer covering bundles of muscle fiber

Perimysium

covering entire muscle

Epimysium

Light area

I Band

dark area

A band

thin dark line

Z Line

mid region of A band

H band

middle of H band

M line

all muscles of the face are innervated by the facial nerve

true

circular muscle around the eye

orbicularis oculi

outer orbital part function

forcefully shuts eye

Inner palpebral part

gently closes eye

buccinator action

moves mouth side to side

temporal fossa is where you find muscles of mastication

true