Human Anatomy - Lab Exam 2 Flashcards
Arm(11) Function of Biceps Brachii:

Flexes and supinates forearm
Arm(16+17)- Tricep Brachii:

Powerful forearm extensor
Arm(19) Function of Brachioradialis:

Synergist in forearm flexion
Arm(22) Function of the Pronator Teres:

Pronates the forearm
Arm(25) Function of Flexor Carpi Ulnaris:

Flexes and adducts hand
Arm(26) Function of Flexor Digitorum Superficialis:

Flexes fingers and middle phalanges of fingers.
Arm(30) Function of Extensor Digitorum:

Prime mover of finger extension
Arm(32) Function of Extensor Carpi Ulnaris:

Extends hand; adducts hand
Buccinator

Compresses the cheeks
Define Abduction and adduction
Abduction: movement of limb away from body Adduction: movement of limb toward body.
Define terms: Flexion, Extension
Flexion: decreases angle between bones. Extension: increases angle between bones.
Define the term: circumduction
Moving limb so that it describes a cone in space.
Deltoid

Abducts arm
External Intercostals

Pull ribs toward one another to elevate rib cage
Function fo Rectus Abdominus

Flex and rotate lumbar region of vertebral column
Name the Slide
Note the function:
Cardiac Muscle
Involuntary contraction of the heart, pumping blood.
Function of External Obliques:

Flex vertebral column, and compress abdominal wall, trunk rotation and lateral flexion.
Function of Gastrocnemius

Plantar flexes foot
Name the slide:
Note the function:
Slide: Skeletal Muscle
Voluntary movement.
Facial expression.
Manipulation of Environment
Name the slide
Note the function:
Slide: Smooth muscle
Involuntary contraction
Function of the Soleus:

Plantar flexes foot
Funtion of Internal Obliques:

Flex vertebral column and compress abdominal wall, trunk rotation and lateral flexion.
Infraspinatus

Laterally rotates arm
Internal Intercostals

Draw ribs together and depress rib cage
Latissimus Dorsi

Prime mover of arm extension, adduction and medial rotation of arm
Leg(10/24) Function of the Sartorius:

Flexes, abducts, and laterally rotates thigh; flexes leg.
Leg(11a/20) Function of the Rectus Femoris:

Extends leg and flexes thigh
Leg(11a/21) Function of the Vastus Lateralis:

Extends leg and stabilizes knee
Leg(11b/23) Function of Vastus Medialis:

Extends leg
Leg(13/26) Function of the Adductor Longus:

Adducts, flexes, and medially rotates thigh
Leg(15/27) Function of Gracilis

Adducts thigh, flexes and medially rotates leg.
Leg(16/30) Function of Semitendinosus:

Extends thigh and flexes leg
Leg(17/29) Function of the Semimembronosus:

Extends thigh and flexes leg.
Leg(18A/31 Function of Bicep Femoris:

Extends thigh and flexes leg
Leg(21/-) Function of Iliacus:

Prime mover in thigh flexion and in flexing trunk
Leg(21/34) Function of Tibialis anterior:

Prime mover of dorsiflexion
Leg(22/35) Function of Fibularis longus:

Plantar flexes and everts foot.
Leg(3/11) Function of Gluteus Maximus.

Major extensor of thigh
Leg(4/-) Function of Gluteus Medius:

Abducts and medially rotate thigh.
Leg(Deep to Rectus femoris) Function of Vastus Intermedialis:
Extends the leg
Masseter

Elevates Mandible, Closes jaw
Movements specific to foot and ankle are:
Plantarflexion: depressing the foot elevating the heel. Dorsiflexion: lifting foot so that superior surface approaches shin. Inversion: turning the sole of the foot medially. Eversion: turning sole of foot laterally
Movements specific to the hand include:
Supination: rotation of forearm so the palm faces anteriorly Pronation: rotating the forearm so the palm faces posteriorly.
Nervous System- Axon

Function: generates action potentials and sends action potentials away from the cell body.
Nervous System- Axon Terminal

Location: Base of rubber band colored processes on the cell body
Function: Stores and releases neurotransmitters
Nervous System- Cell Body

Location: (opened model) contains the cells nucleus and all parts in nucleus
Function: Neuron metabolism
Nervous System- Dendrites

Location: Processes that extend out from cell body(NOT the rubber band colored) Function: Receptive sites, receives and sends signals towards the cell body.
Nervous System- Myelin Sheath

Name the Cell: Schwann cell Name the Structure: Myelin Sheath Function: Insulates the Axon
Nervous System- Neurolemma

Name the Cell: Schwann cell Name the Structure: Neurolemma Function: Schwann cell metabolism
Nervous System- Node of Ranvier

Location: Gaps or spaces in between Schwann cells
Function: Generates and speeds up action potentials
Nervous System- Schwann Cell

Structure: Myelin Sheath Function: Insulates the axon by producing myelin sheath.
Nervous System- Synapse
Location: Base of axon terminal on cell body(Hint: tiny space- name the specific structure)
Function: Communication
Orbicularis Oculi

Closes the eye
Orbicularis Oris

Purses the lips
Pectoralis Major

Prime mover of arm flexion. Rotates arm and medially adducts arm.
Pectoralis Minor

With fixed ribs, protracts, and rotates scapula downward.
Sternocleidomastoid

Flexes and laterally rotates head
Supraspinatus

Initiates abduction of arm
Temporalis

Elevates Mandible, Closes jaw
Teres Major (Slice of Pizza)

Extends, medially rotates, and adducts the arm
Trapezius

Function: Stabilizes, elevates, retracts, and rotates the scapula
Zygomaticus

Raises lateral corners of the mouth (smiling)
Transverse Abdominus

Compress abdominal contents
Eye- Extrinsice Eye Muscle
Function: anchor and move the eye
Eye- Lacrimal Gland
Function: produces tears
Eye- Sclera

Protects the Eye
Gives shape to the eye
Attachment site for extrinsic eye muscles
Eye- Cornea

Function: (anterior part of the eye)
Protection
Transmits light
Bends light
Eye- Iris

Function: REGULATES the size of the pupil (w/smooth muscles)
Eye- Pupil

Function: REGULATES the amount of light that enters the eye.
Name the Slide:
At the pointer:
.
Human Spinal Cord
Pointer: Central Canal
Eye- Lens

Function: Focuses Light on the retina
Eye- Ciliary Body

Function: Changes the shape of the lens
Eye- Suspensory Ligaments

(old model and sheep eye only)
Function: Anchor the lens in place
Eye- Vitreous Humor

(posterior part of the eye)
Transmits Light
Gives shape to the eye
Supports Retina, Supports lens
Eye- Retina

(Inner most cloudy white layer)
Contains receptors for site.
Name the Cell: Rods/Cones , Bipolar cells, Ganglian cells
Eye- Optic Disc

Blind Spot
Eye- Macula Lutea/Fovea Centralis

Function: responsible for central vision
Cell: Only cone photo receptors
Eye- Choroid Coat

(deep to the sclera)
Provides blood to the eye wall.
Prevents light from scattering
Eye- Optic Nerve

Function: transmits visual info from the eye to the brain
Slide
Name Slide:
At the Pointer:
Slide: Spinal Cord
Pointer: White Matter
Name the slide:
At the pointer:
Human Spinal Cord
Pointer: Posterior Horn
Name the slide:
At the pointer:
Human Spinal Cord
Anterior Horn
Name the structure
At the pointer:
Nerve(Cross Section)
Pointer: Axon
Name the Slide
At the Pointer:
Nerve (Longitudinal Section)
Pointer: Axon
Be able to locate: Myelin, Nuerolemma, and node of Ranvier
Auricle
Neuroglia(Astrocyte)
Function: supports cells that surround, wrap and aid in neural activity.