ANSWERS GRADED A+ 2025/2026
When thermoreceptors detect a rise in temperature, the anterior hypothalamus tells the
smooth muscles that surround cutaneous arterioles to relax. Vasodilation allows more
blood to flow near the surface of the skin, and heat is lost to the environment
SAGITTAL PLANE OF MOTION -
Sagittal plane - divides body into left and right
Flexion - Decrease the angle between 2 body parts
Ex: bending the elbow
Extension - Increasing the angle between 2 body parts
Ex: Straightening the elbow
Dorsiflexion - Ankle flexion (moving toes toward the shin)
Plantar flexion - Ankle extension (moving the toes toward the ground/ pointing the toes)
FRONTAL PLANE OF MOTION -
Frontal plane - Divides the body into front/ anterior and back/ posterior portions.
Adduction - movement toward the midline or to the body
Ex: Bringing the arm to the body
Abduction - Movement away from the midline of the body
Ex: moving the arm away from the body
Elevation - Scapula movement
Superior movement
Ex: shoulder shrug
Depression - Scapula movement
Inferior movement
Ex: Shoulder dhrug
Inversion - Lifting the medial border of the foot
Bring sole of the foot to face inward
Eversion - Lifting the lateral border of the foot
Bring sole of the foot to face outward
TRANSVERSE PLANE OF MOTION -
, Transverse plane - divides the body into superior and inferior parts
Pronation - Rotating the hand and wrist medially from the bone
If laying on the back, the hand would have the palm to the floor
Supination - Rotating the hand and wrist laterally from the bone
If laying on the back, the palm and wrist would be facing toward the ceiling
Horizontal adduction - The angle between 2 joints decreases on the horizontal plane
Horizontal abduction - The angle between 2 joints increases on the horizontal plane
Rotation - Pivoting or twisting on the axis
(turning the head left or right)
Skeletal muscle is under ------ control - somatic/ voluntary control
Skeletal muscle is involved in the movement of - bone, support, thermoregulation, and
venous return to the heart
Are skeletal muscles striated? - yes
structure of skeletal muscle - striated
voluntary
single skeletal myocyte is cylinder-shaped
Has many nuclei
striated
voluntary
single skeletal myocyte is cylinder-shaped
Has many nuclei - skeletal muscle
Smooth muscle is under ----- control - autonomic/ involuntary control
Where are smooth muscle tissues found - walls of hollow organs
vessels
aids in movement of food/ blood
involuntary
non striated
spindle shaped
uninucleate - smooth muscle
Structure of smooth muscle - involuntary
non striated