Cells & Their Organelles
This cell structure forms the outer boundary of the cell, and regulates what substances can cross it.
What is the plasma membrane?
Consisting of seven vertebrae, this is the uppermost portion of the spinal column.
What is the cervical spine?
Muscles are connected to bones by these strong connective tissue structures.
What are tendons?
As part of the swallow reflex, this flap of tissue closes over the larynx to direct food toward the esophagus.
What is the epiglottis?
These lymphatic tissue structures guard the opening of the throat to catch unwanted particles that the body might inhale or ingest.
What are the tonsils?
These organelles produce ATP through a process called cellular respiration.
What are the mitochondria?
While osteoclasts play a role in dissolving bone when needed, these cells are busy building new bone in times of growth and repair.
What are osteoblasts?
All muscle types can stretch, can respond to the nervous system, and can do this, the scientific term for a muscle getting shorter.
What is contract (or contraction)?
Found in some of the facial bones, these open chambers warm incoming air and contribute to the sound and quality of the voice.
What are sinuses?
The protein hemoglobin makes up the majority of the interior of this component of blood, so that oxygen can attach and be delivered to the body tissues.
What are red blood cells?
This cell structure holds the genetic code used to direct protein synthesis.
What is the nucleus?
Bones are connected to each other by these strong straps of connective tissue.
What are ligaments?
All muscles need this in order to function properly, a mineral that also makes bones and teeth strong.
What is calcium?
Sitting inferior to the ribcage, this respiratory muscle contracts and drops to make space for the lungs to fill with air.
What is the diaphragm?
This type of highly specialized muscle tissue is found only in the heart.
What is cardiac?
Along with actin, this other cellular protein is involved when muscles are contracting.
What is myosin?
Of radius, femur or calcaneus, the bone that is not typically called upon for bearing weight.
What is the radius?
Of antagonists, synergists, or stabilizers, the type of muscle pairing that would describe the gastrocnemius and soleus muscles working together to perform the same joint action.
What are synergists?
These microscopic air sacs in the lungs are where oxygen enters the capillaries and carbon dioxide leaves the blood to be exhaled.
What are alveoli?
As lymph fluid circulates through lymph vessels, it will pass through at least one of these, to be filtered and cleansed of foreign particles like bacteria and viruses.
What are lymph nodes?
From the word that means 'to break apart', this organelle destroys bacteria and other particles that may be harmful to the body.
What are lysosomes?
Of synovial, fibrous, or cartilaginous, the ball-and-socket joint of the shoulder is this type of joint.
What is synovial?
Of the iliopsoas, gluteus maximus, and piriformis muscles, this is the one that flexes the hip.
What is the iliopsoas?
Also called the windpipe, this structure is help open by sturdy rings of cartilage.
What is the trachea?
Millions of these in the blood ensure that blood will clump properly if a blood vessel is damaged and bleeding occurs.
What are platelets?