Lab test 2 Flashcards
Name the bones of the skull
Frontal Parietal Temporal Occipital Sphenoid Ethmoid
Sclera function
Protective outer layer of the eye (white of the eye)
Choroid function
A vascular layer membrane that separates the fibrous layer from the retina
Retina function
receive light that the lens has focused, convert light into neural signals and send signals to the brain for visual recognition
Optic nerve function
Transfer visual information from the retina to the vision centers of the brain via electrical impulses
Iris function
Responsible for controlling the diameter and size of the pupil and thus the amount of light that reaches the retina
Lens function
Focuses light onto the retina and helps the eye focus on objects at various distances
Pupil function
Regulates the amount of light that enters the eye
Aqueous humor function
Distributes nutrients and waste, acts as a fluid cushion and helps retain eye shape
Vitreous humor
Holds retina in place and gives shape to the eye
Cornea function
Controls and focuses the entry of light into the eye
Ciliary body function
Contains ciliary muscle which controls the shape of the lens and ciliary epthelium which produces the aqueous humor
Rods funciton
Responsible for vision at low light levels
Cones function
Responsible for color vision and function best in bright light
Parts of vertabrae
Cervical Thoracic Lumbar Sacral Coccygeal
Vitreous humor and aqueous humor role
- The vitreous humor holds the retina in place and gives the eye shape
- The aqueous humor distributes nutrients and waste, acts as a fluid cushion, and helps retain eye shape
Compare and contrast rods and cones
Rods are responsible for vision in low light levels. Cones are responsible for color vision and function best in bright light
Functions of the integumentary system
Acts as a barrier to protect the body from the outside world. It also functions to retain body fluids, protect against disease, eliminate waste, and regulate body temperature
Functions of bone
Bone acts as a structural framework for tendons to attach to and provides support for soft tissue, protects internal organs from injury, and assists with movement
Functions of muscle
Movement, posture, joint stability and heat production
Muscles that make up the hamstrings
Semitendonosus
Biceps femoris
Semimembranosus
Function of skeletal muscle
Movement, posture, generation of body heat and support of soft tissues
Function of smooth muscle
Involuntary muscle found in the walls of blood vessels, lining the viscera, and the iris where they serve to regulate the diameter of the eye’s pupils
Function of cardiac muscle
Pumps blood throughout the body. Found only in the heart
Auricle function
Gathers sound energy and focuses it on the eardrum
Types of auditory ossicles and function
Malleus, stapes, incus
How many cervical vertabrae
7
How many thoracic vertabrae
12
How many lumbar vetrabrae
5
How many sacrum vertabrae
5 fused
Function of auditory ossicles
Vibrate to amplify sound
Tympanic membrane function
Carry sound waves to the auditory ossicles
Cochlea function
Transform vibrations of the cochlear liquids into neural signal
Vestibule function
Responds to changes in the position of the head with respect to gravity
Vestibucocchlear nerve
Responsible for both hearing and equilibrium and brings information from the inner ear to the brain
Parts of the rib cage
Manubrium
Body
Xiphoid
Parts of the upper limbs
Clavicle Scapula Humerus Radius Ulna Carpals Phalanges
Parts of the lower limbs
Femur Tibia Fibula Patella Tarsals Phalanges
Parts of the pelvis
Ilium
Ischium
Pubic
Lobes of the cerebrum
Frontal lobe
Parietal lobe
Occipital lobe
Temporal lobe
Parietal lobe function
Perception of touch, pressure, pain, taste, temperature
Temporal lobe function
Hearing, smell, memory, emotional behavior, visual recognition
Occipital lobe function
Visual centers of the brain
Frontal lobe function
Memory, planning, emotion, speech, judgement, mood, voluntary control of skeletal muscle, and aggression
Meninges function
Protect and nourish the brain
Importance of sutures
Allow for a tiny amount of movement. Contributes to the compliance and elasticity of the skull. Sutures allow the bones to move during the birth process. They act like an expansion joint, allowing the bone to enlarge evenly as the brain grows and the skull expands, resulting in a symmetrically shaped head
Types of taste buds
Sweet Salty Sour Bitter (Umami)
Location of sweet taste buds
Tip of tongue
Location of salty taste buds
Front and front sides of tongue
Location of sour taste buds
Sides of tongue
Location of bitter taste buds
Back of tongue
Location of umami taste buds
Entire tongue
Cerebrum function
Associated with higher brain function such as thought and action. Divided into four lobes
Cerebellum function
Motor coordination, monitoring sensory input, muscle movements, and muscle tone
Diencephalon function
Contains the epithalamus, thalamus and hypothalamus.
Thalamus function
Final relay point for ascending sensory information going to the primary sensory cortex; involved in emotion, motivation, touch, pain, temperature, position, visual and auditory signals
Hypothalamus function
Thirst, eating, body temperature, circadian rhythms
Midbrain function
Associated with vision, hearing, motor control, sleep/awake, arousal, and temperature regulation
Pons function
Connects cerebellum to other parts of the brain and spinal cord; contains sensory and motor nuclei that involve sleep, respiration, swallowing, hearing, equilibrium, taste, eye movements, bladder control, and movements of the head
Medulla function
Center for autonomic regulation of heartbeat, breathing, constriction and relaxation of blood vessels, sneezing, coughing, gagging, vomiting, hiccups, and swallowing
Gray vs white matter
Gray matter contains the cell bodies, dendrites, and axon terminals of neurons. It includes regions of the brain involved in muscle control, and sensory perception such as seeing and hearing, memory, emotions, speech, decision making, and self-control.
White matter is composed of bundles of myelinated axons which connect various gray matter areas and carry nerve impulses between neurons
Pathway of vision
light through the eye to the cornea -
aqueous humor - through pupil -
lens - vitreous humor - retina -
optic nerve - brain - the occipital lobe
Ear’s role in balance
The inner ear is responsible for balance
Vestibular system: Balance organs in the inner ear tell the brain about the movements and position of your head. There is a set of three tubes (semi-circular canals) in each ear, and these sense when you move your head around and help keep your vision clear.
Ear’s role in hearing
All three parts of the ear are involved in hearing. The outer ear is composed of the pinna, or ear lobe, and the external auditory canal. Both structures funnel sound waves towards the ear drum or tympanic membrane allowing it to vibrate.
Types of joints
- Synarthrosis (no movement)
- Amphiarthrosis (little movement)
- Diarthrosis (free movement)
Example of synarthrosis joints
sutures of the skull
Example of amphiarthrosis joints
The articulation between the vertebrae at the intervertevral discs
Example of amphiarthrosis joints
The articulation between the vertebrae at the intervertevral discs
Example of diarthrosis joints (synovial)
knee, hip, ankle, elbow, shoulder
Types of diarthrosis joints (synovial)
- Hinge joints (elbow, knee)
- Ball and socket (humerus/pectoral, femur/pelvis)
- Gliding (wrists, ankles)
- Pivot (atlas, axis)
Flexion of the elbow example
Doing bicep curl weight lifting
Extension of the knee example
Walking
Opposition of the thumb example
Picking something up with your hand
Eversion of the ankle
Rotating your ankle
Adduction of the arm
Trying to hug someone
Elevation of the shoulder
Shrugging your shoulders
Rotation of the neck
Turning your head to look at something
Circumduction of the arm
Swimming
Compare and contrast the CNS and PNS
- CNS contains the brain and spinal cord. With the help of the PNS, it has a fundamental role in the control of behavior.
- PNS consists of the nerves and ganglia outside of the brain and spinal cord. The main function of the PNS is to connect the CNS to the limbs and organs
Describe the basic types of odors
- Putrid
- Pungent
- Minty
- Floral
- Musky
- Ethereal
- Camphoraceous
- Fishy
Two major functions of the ear
Hearing and balance