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Anatomy Final
Anatomy Weeks 6-12
| Question | Answer |
|---|---|
| Q: What is the main function of axial muscles? | A: They support and move the head, neck, and trunk, and stabilize the vertebral column. |
| The biceps brachii is part of which muscle division: axial or appendicular? | Appendicular. |
| What is the primary action of the sternocleidomastoid? | Rotates the head to the opposite side and flexes the neck. |
| Which muscle is the main breathing muscle? | The diaphragm. |
| What is the primary function of the quadriceps femoris group? | Extension of the knee. |
| What are the two major cell types in nervous tissue? | Neurons and neuroglia (glial cells). |
| Which glial cell forms myelin in the CNS? | Oligodendrocytes. |
| Which glial cell forms myelin in the PNS? | Schwann cells. |
| What is the function of astrocytes? | Maintain the blood–brain barrier and support neurons. |
| What is the basic functional unit of the nervous system? | The neuron. |
| What are the two major divisions of the central nervous system? | Brain and spinal cord. |
| What part of the nervous system carries sensory and motor information to the rest of the body? | The peripheral nervous system (PNS). |
| What ANS division is responsible for “fight or flight”? | Sympathetic nervous system. |
| What ANS division is responsible for “rest and digest”? | Parasympathetic nervous system. |
| What structure connects the two hemispheres of the brain? | The corpus callosum. |
| Which photoreceptors detect color? | Cones |
| What structure in the ear is responsible for hearing? | Cochlea |
| Which gland is known as the “master gland”? | The pituitary gland. |
| What hormone does the thyroid gland produce to regulate metabolism? | Thyroxine |
| Which endocrine gland responds to stress by releasing cortisol? | The adrenal cortex. |
| : What is the largest artery in the body? | The aorta. |
| What is the pacemaker of the heart? | SA node (sinoatrial node). |
| Which blood cells are responsible for oxygen transport? | Red blood cells (erythrocytes). |
| What protein binds oxygen in RBCs? | Hemoglobin. |
| What type of blood vessel carries blood toward the heart? | Veins. |
| What is the main function of the lymphatic system? | Return interstitial fluid to the bloodstream and participate in immune defense. |
| Which organ filters blood and removes old red blood cells? | Spleen. |
| What cells are responsible for antibody production? | B cells (plasma cells). |
| What is innate immunity? | The body’s non-specific, immediate defense system. |
| What is adaptive immunity? | Specific immunity that develops after exposure to antigens. |
| What is the primary site of gas exchange in the lungs? | Alveoli. |
| What muscle is the main driver of inhalation? | The diaphragm. |
| What structure prevents food from entering the trachea? | The epiglottis. |
| What is tidal volume? | The amount of air inhaled or exhaled during normal breathing. |
| What are the two phases of respiration? | Inspiration and expiration. |